SERVICE MANUAL HTP-8230(S) 5.1-CH HOME THEATER SPEAKER PACKAGE MODEL

SERVICE MANUAL HTP-8230(S) 5.1-CH HOME THEATER SPEAKER PACKAGE MODEL

5.1-CH HOME THEATER SPEAKER PACKAGE

MODEL

HTP-8230(S)

Front Speakers (L / R)

"SKF-8230F"

Center Speaker

"SKC-8230C"

Surround Speakers (L / R)

"SKM-8230S"

Powered Subwoofer

"SKW-8230"

HTP-8230

Ref. No. 3815

082004

SMDD

Silver model

120 V AC, 60Hz

SAFETY-RELATED COMPONENT

WARNING!!

COMPONENTS IDENTIFIED BY MARK ON THE

SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE

CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.

REPLACE THESE COMPONENTS WITH ONKYO

PARTS WHOSE PART NUMBERS APPEAR AS SHOWN

IN THIS MANUAL.

MAKE LEAKAGE-CURRENT OR RESISTANCE

MEASUREMENTS TO DETERMINE THAT EXPOSED

PARTS ARE ACCEPTABLY INSULATED FROM THE

SUPPLY CIRCUIT BEFORE RETURNING THE

APPLIANCE TO THE CUSTOMER.

HTP-8230

SPECIFICATIONS

Powered Subwoofer (SKW-8230)

Type :

Powered Bass-reflex

Input sensitivity / impedance : 220 mV / 15 k ohm

Maximum output power :

Frequency response :

Cabinet capacity :

Dimensions (W x H x D) :

100 W (Dynamic Power)

35 Hz - 150 Hz

0.91 cubic feet (26 Litter)

9-1/16 x 17-13/16 x 15-7/8 inch

Weight :

Speaker unit :

Power supply :

Power consumption :

Other :

(230 x 436 x 404 mm)

24.7 lbs. (11.2 kg)

8 inch Cone

AC 120 V, 60 Hz

75 W

Auto Standby function

Center Speaker (SKC-8230C)

Type :

Impedance :

Maximum input power :

Output sound pressure level : 78 dB/W/m

Frequency response :

Crossover frequency :

Cabinet capacity :

Dimensions (W x H x D) :

2 Way Bass-reflex

8 ohm

100 W

70 Hz - 50 kHz

4.5 kHz

0.057 cubic feet (1.6 Litter)

10-3/8 x 4 x 4-15/16 inch

(264 x 101 x 126 mm)

4.4 lbs. (2.0 kg) Weight :

Speaker unit :

Woofer

Tweeter

Terminal :

Other :

3-1/8" inch Cone x 2

1 inch Balanced Dome

Spring type Color coded

Magnetic shielding

Front Speaker (SKF-8230F)

Type :

Impedance :

Maximum input power :

Output sound pressure level : 76 dB/W/m

Frequency response :

Crossover frequency :

Cabinet capacity :

Dimensions (W x H x D) :

2 Way Bass-reflex

8 ohm

100 W

70 Hz - 50 kHz

4.5 kHz

0.035 cubic feet (1.0 Litter)

4 x 6-5/8 x 4-15/16 inch

(101 x 169 x 126 mm)

2.6 lbs. (1.2 kg) Weight :

Speaker unit :

Woofer :

Tweeter :

Terminal :

Other :

3-1/8 inch Cone

1 inch Balanced Dome

Spring type Color coded

Magnetic shielding

Surround Speaker (SKM-8230S)

Type :

Impedance :

Maximum input power :

Output sound pressure level : 79 dB/W/m

Frequency response :

Crossover frequency :

Cabinet capacity :

Dimensions (W x H x D) :

2 Way Bass-reflex

8 ohm

100 W

70 Hz - 30 kHz

10 kHz

0.035 cubic feet (1.0 Litter)

4 x 6-5/8 x 4-15/16 inch

(101 x 169 x 126 mm)

1.8 lbs. (0.8 kg) Weight :

Speaker unit :

Woofer :

Tweeter :

Terminal :

3-1/8 inch Cone Woofer

3/4 inch Ceramic Tweeter

Spring type Color coded

Specifications and appearance are subject to change without prior notice.

HTP-8230

EXPLODED VIEWS-1

SKW-8230 : POWERED SUBWOOFER

SP06

x 10 pcs.

A02

A01

A03

U03

U02

U01

A05 x 4 pcs.

F903

F902

A04

Refer to "EXPLODED VIEWS-2"

<Note>

IC501---> Refer to "PRINTED CIRCUIT BOARD PARTS LIST"

EXPLODED VIEWS-2

SKW-8230 : POWERED SUBWOOFER

SP01

SP08

SP06

x 8 pcs.

SP04

SP02

x 4 pcs.

SP05

x 8 pcs.

SP03

HTP-8230

EXPLODED VIEWS-3

SKF-8230F / SKC-8230C / SKM-8230S

SP11

SP10

SP13

SP12

SP15

SP14

TERMINAL :

White / Black

"SKF-8230F (L)"

SP17

TERMINAL :

Red / Black

"SKF-8230F (R)"

SP16

SP19

TERMINAL :

Green / Black

SP18

"SKC-8230C"

TERMINAL :

Blue / Black

"SKM-8230S (L)"

NOT MAGNETICALLY SHIELDED

TERMINAL :

Gray / Black

"SKM-8230S (R)"

NOT MAGNETICALLY SHIELDED

HTP-8230

BLOCK DIAGRAM

SKW-8230 : POWERED SUBWOOFER

HTP-8230

1

A B

SCHEMATIC DIAGRAM

SKW-8230 : POWERED SUBWOOFER

C

HTP-8230

D E

2

3

4

LINE

INPUT

OUTPUT

LEVEL

LED

RED : STANDBY

GREEN : ON

U02

INPUT PC BOARD

U03

VR / LED PC BOARD

5

U01

MAIN PC BOARD

AC 120V / 60Hz

F G H

HTP-8230

SPEAKER

1

A B

SCHEMATIC DIAGRAM

SKW-8230 : POWERED SUBWOOFER

C

HTP-8230

D E

2

3

4

LINE

INPUT

OUTPUT

LEVEL

LED

RED : STANDBY

GREEN : ON

U02

INPUT PC BOARD

U03

VR / LED PC BOARD

5

U01

MAIN PC BOARD

AC 120V / 60Hz

F G H

HTP-8230

SPEAKER

1

A B

SCHEMATIC DIAGRAM

SKW-8230 : POWERED SUBWOOFER

C D E

2

3

4

LINE

INPUT

OUTPUT

LEVEL

LED

RED : STANDBY

GREEN : ON

U02

INPUT PC BOARD

U03

VR / LED PC BOARD

5

U01

MAIN PC BOARD

AC 120V / 60Hz

F G H

HTP-8230

SPEAKER

PC BOARD CONNECTION DIAGRAM

SKW-8230 : POWERED SUBWOOFER

INPUT PC BOARD

MAIN PC BOARD

VR / LED PC BOARD

HTP-8230

1

A B

PRINTED CIRCUIT BOARD VIEW

SKW-8230 : POWERED SUBWOOFER

U01

MAIN PC BOARD

C

HTP-8230

D

2

3

4

5

U02

INPUT PC BOARD

U03

VR / LED PC BOARD

No PC board view

Look over the actual PC board on hand

®

TDA7293

120V - 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY

VERY HIGH OPERATING VOLTAGE RANGE

(

±

50V)

DMOS POWER STAGE

HIGH OUTPUT POWER (100W @ THD =

10%, R

L

= 8

, V

S

=

±

40V)

MUTING/STAND-BY FUNCTIONS

NO SWITCH ON/OFF NOISE

VERY LOW DISTORTION

VERY LOW NOISE

SHORT CIRCUIT PROTECTED (WITH NO IN-

PUT SIGNAL APPLIED)

THERMAL SHUTDOWN

CLIP DETECTOR

MODULARITY (MORE DEVICES CAN BE

EASILY CONNECTED IN PARALLEL TO

DRIVE VERY LOW IMPEDANCES)

DESCRIPTION

The TDA7293 is a monolithic integrated circuit in

Multiwatt15 package, intended for use as audio class AB amplifier in Hi-Fi field applications

(Home Stereo, self powered loudspeakers, Top-

Figure 1: Typical Application and Test Circuit

MULTIPOWER BCD TECHNOLOGY

Multiwatt15V Multiwatt15H

ORDERING NUMBERS:

TDA7293V TDA7293HS class TV). Thanks to the wide voltage range and to the high out current capability it is able to supply the highest power into both 4

and 8

loads.

The built in muting function with turn on delay simplifies the remote operation avoiding switching on-off noises.

Parallel mode is made possible by connecting more device through of pin11. High output power can be delivered to very low impedance loads, so optimizing the thermal dissipation of the system.

VMUTE

VSTBY

C7 100nF

+Vs

C6 1000

µ

F

R3 22K

C2

22

µ

F

R2

680

C1 470nF

IN+

R1 22K

IN2

3

R5 10K

SGND

(**)

MUTE

4

10

STBY 9

MUTE

STBY

R4 22K

C3 10

µ

F C4 10

µ

F

-

+

+Vs

1

STBY-GND

7

BUFFER DRIVER

11

8

-Vs

THERMAL

SHUTDOWN

C9 100nF

+PWVs

13

S/C

PROTECTION

15

-PWVs

C8 1000

µ

F

14 OUT

12

6

5

BOOT

LOADER

C5

22

µ

F

BOOTSTRAP

VCLIP

CLIP DET

(*)

D97AU805A

-Vs

(*) see Application note

(**) for SLAVE function

January 2003 1/15

TDA7293

PIN CONNECTION (Top view)

TAB CONNECTED TO PIN 8

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

D97AU806

-V

S

(POWER)

OUT

+V

S

(POWER)

BOOTSTRAP LOADER

BUFFER DRIVER

MUTE

STAND-BY

-V

S

(SIGNAL)

+V

S

(SIGNAL)

BOOTSTRAP

CLIP AND SHORT CIRCUIT DETECTOR

SIGNAL GROUND

NON INVERTING INPUT

INVERTING INPUT

STAND-BY GND

Symbol

V

S

V

1

V

2

V

2

- V

3

V

3

V

4

V

5

V

6

V

9

V

10

V

11

V

12

I

O

P tot

T op

T stg

, T j

ABSOLUTE MAXIMUM RATINGS

Supply Voltage (No Signal)

Parameter

V

STAND-BY

GND Voltage Referred to -V

S

(pin 8)

Value

±

60

90

Input Voltage (inverting) Referred to -V

S

90

Maximum Differential Inputs

±

30

Input Voltage (non inverting) Referred to -V

S

90

Signal GND Voltage Referred to -V

S

90

Clip Detector Voltage Referred to -V

S

120

Bootstrap Voltage Referred to -V

S

120

Stand-by Voltage Referred to -V

S

120

Mute Voltage Referred to -V

S

120

Buffer Voltage Referred to -V

S

120

Bootstrap Loader Voltage Referred to -V

S

100

Output Peak Current

Power Dissipation T case

= 70

°

C

Operating Ambient Temperature Range

10

50

0 to 70

Storage and Junction Temperature 150

V

V

V

V

V

V

Unit

V

V

V

V

A

V

V

W

°

C

°

C

THERMAL DATA

Symbol

R th j-case

Description

Thermal Resistance Junction-case

2/15

Typ

1

Max

1.5

Unit

°

C/W

TDA7293

ELECTRICAL CHARACTERISTICS (Refer to the Test Circuit V

S

=

±

40V, R

L

= 8

, R g

= 50

;

T amb

= 25°C, f = 1 kHz; unless otherwise specified).

Symbol

V

S

I q

I b

V

OS

I

OS

P

O

Parameter

Supply Range

Quiescent Current

Input Bias Current

Input Offset Voltage

Input Offset Current

RMS Continuous Output Power

Test Condition

d Total Harmonic Distortion (**) d = 1%:

R

L

= 4

Ω;

V

S

=

±

29V, d = 10%

R

L

= 4

; V

S

=

±

29V

P

O

= 5W; f = 1kHz

P

O

= 0.1 to 50W; f = 20Hz to 15kHz

V

S

≤ ±

40V I

SC

SR

G

V

G

V e

N

Current Limiter Threshold

Slew Rate

Open Loop Voltage Gain

Closed Loop Voltage Gain (1)

Total Input Noise A = curve f = 20Hz to 20kHz

R i

SVR

T

S

Input Resistance

Supply Voltage Rejection

Thermal Protection f = 100Hz; V ripple

= 0.5Vrms

DEVICE MUTED

DEVICE SHUT DOWN

STAND-BY FUNCTION (Ref: to pin 1)

V

ST on

V

ST off

Stand-by on Threshold

Stand-by off Threshold

ATT st-by

I q st-by

Stand-by Attenuation

Quiescent Current @ Stand-by

MUTE FUNCTION (Ref: to pin 1)

V

Mon

V

Moff

Mute on Threshold

Mute off Threshold

ATT mute

Mute AttenuatIon

CLIP DETECTOR

Duty Duty Cycle ( pin 5) THD = 1% ; RL = 10K

Ω to 5V

THD = 10% ;

RL = 10K

to 5V

PO = 50W I

CLEAK

SLAVE FUNCTION pin 4 (Ref: to pin 8 -V

S

)

V

Slave

SlaveThreshold

V

Master

Master Threshold

Note (1): G

Vmin

26dB

Note: Pin 11 only for modular connection. Max external load 1M

/10 pF, only for test purpose

Note (**): Tested with optimized Application Board (see fig. 2)

Min.

±

12

-10

75

90

5

29

100

3.5

70

3.5

60

30

3

Typ.

50

0.3

80

80

100

100

0.005

6.5

10

80

30

1

3

75

150

160

90

0.5

80

10

40

Max.

±

50

100

1

10

0.2

0.1

31

10

1.5

1

1.5

50

3

1

%

%

µ

A

V

V dB mA

V

V dB

V

V

Unit

V mA

µ

A mV

µ

A

W

W

%

%

A

V/

µ s dB dB

µ

V

µ

V k

Ω dB

°

C

°

C

3/15

TDA7293

Figure 2: Typical Application P.C. Board and Component Layout (scale 1:1)

4/15

TDA7293

APPLICATION SUGGESTIONS (see Test and Application Circuits of the Fig. 1)

The recommended values of the external components are those shown on the application circuit of Figure 1. Different values can be used; the following table can help the designer.

COMPONENTS

R1 (*)

R2

R3 (*)

R4

R5

C1

C2

C3

C4

C5

C6, C8

C7, C9

SUGGESTED VALUE

22k

PURPOSE

LARGER THAN

SUGGESTED

INPUT RESISTANCE INCREASE INPUT

IMPEDANCE

680

22k

CLOSED LOOP GAIN

SET TO 30dB (**)

SMALLER THAN

SUGGESTED

DECREASE INPUT

IMPEDANCE

DECREASE OF GAIN INCREASE OF GAIN

INCREASE OF GAIN DECREASE OF GAIN

22k ST-BY TIME

CONSTANT

LARGER ST-BY

ON/OFF TIME

SMALLER ST-BY

ON/OFF TIME;

POP NOISE

10k

0.47

µ

F

MUTE TIME

CONSTANT

INPUT DC

DECOUPLING

LARGER MUTE

ON/OFF TIME

22

µ

22

10

10

µ

µ

µ

F

F

F

FXN (***)

FEEDBACK DC

DECOUPLING

MUTE TIME

CONSTANT

ST-BY TIME

CONSTANT

BOOTSTRAPPING

LARGER MUTE

ON/OFF TIME

LARGER ST-BY

ON/OFF TIME

SMALLER MUTE

ON/OFF TIME

HIGHER LOW

FREQUENCY

CUTOFF

HIGHER LOW

FREQUENCY

CUTOFF

SMALLER MUTE

ON/OFF TIME

SMALLER ST-BY

ON/OFF TIME;

POP NOISE

SIGNAL

DEGRADATION AT

LOW FREQUENCY

1000

µ

F

0.1

µ

F

SUPPLY VOLTAGE

BYPASS

SUPPLY VOLTAGE

BYPASS

DANGER OF

OSCILLATION

(*) R1 = R3 for pop optimization

(**) Closed Loop Gain has to be

26dB

(***) Multiplay this value for the number of modular part connected

Slave function: pin 4 (Ref to pin 8 -V

S

)

-V

S

+3V

-V

S

+1V

MASTER

UNDEFINED

Note:

If in the application, the speakers are connected via long wires, it is a good rule to add between the output and GND, a Boucherot Cell, in order to avoid dangerous spurious oscillations when the speakers terminal are shorted.

The suggested Boucherot Resistor is 3.9

/2W and the capacitor is 1

µ

F.

-V

S

SLAVE

D98AU821

5/15

TDA7293

INTRODUCTION

In consumer electronics, an increasing demand has arisen for very high power monolithic audio amplifiers able to match, with a low cost, the performance obtained from the best discrete designs.

The task of realizing this linear integrated circuit in conventional bipolar technology is made extremely difficult by the occurence of 2nd breakdown phoenomenon. It limits the safe operating area (SOA) of the power devices, and, as a consequence, the maximum attainable output power, especially in presence of highly reactive loads.

Moreover, full exploitation of the SOA translates into a substantial increase in circuit and layout complexity due to the need of sophisticated protection circuits.

To overcome these substantial drawbacks, the use of power MOS devices, which are immune from secondary breakdown is highly desirable.

The device described has therefore been developed in a mixed bipolar-MOS high voltage technology called BCDII 100/120.

frequency response; moreover, an accurate control of quiescent current is required.

A local linearizing feedback, provided by differential amplifier A, is used to fullfil the above requirements, allowing a simple and effective quiescent current setting.

Proper biasing of the power output transistors alone is however not enough to guarantee the absence of crossover distortion.

While a linearization of the DC transfer characteristic of the stage is obtained, the dynamic behaviour of the system must be taken into account.

A significant aid in keeping the distortion contributed by the final stage as low as possible is provided by the compensation scheme, which exploits the direct connection of the Miller capacitor at the amplifier’s output to introduce a local AC feedback path enclosing the output stage itself.

1) Output Stage

The main design task in developping a power operational amplifier, independently of the technology used, is that of realization of the output stage.

The solution shown as a principle shematic by

Fig3 represents the DMOS unity - gain output buffer of the TDA7293.

This large-signal, high-power buffer must be capable of handling extremely high current and voltage levels while maintaining acceptably low harmonic distortion and good behaviour over

Figure 3: Principle Schematic of a DMOS unity-gain buffer.

2) Protections

In designing a power IC, particular attention must be reserved to the circuits devoted to protection of the device from short circuit or overload conditions.

Due to the absence of the 2nd breakdown phenomenon, the SOA of the power DMOS transistors is delimited only by a maximum dissipation curve dependent on the duration of the applied stimulus.

In order to fully exploit the capabilities of the power transistors, the protection scheme implemented in this device combines a conventional

SOA protection circuit with a novel local temperature sensing technique which " dynamically" controls the maximum dissipation.

6/15

TDA7293

Figure 4: Turn ON/OFF Suggested Sequence

+Vs

(V)

+40

-40

-Vs

VIN

(mV)

VST-BY

PIN #9

(V)

5V

VMUTE

PIN #10

(V)

5V

IQ

(mA)

VOUT

(V)

OFF

ST-BY

MUTE

PLAY

In addition to the overload protection described above, the device features a thermal shutdown circuit which initially puts the device into a muting state (@ Tj = 150 o

C) and then into stand-by (@

Tj = 160 o

C).

Full protection against electrostatic discharges on every pin is included.

Figure 5: Single Signal ST-BY/MUTE Control

Circuit

ST-BY OFF

MUTE

D98AU817 mute functions, independently driven by two

CMOS logic compatible input pins.

The circuits dedicated to the switching on and off of the amplifier have been carefully optimized to avoid any kind of uncontrolled audible transient at the output.

The sequence that we recommend during the

ON/OFF transients is shown by Figure 4.

The application of figure 5 shows the possibility of using only one command for both st-by and mute functions. On both the pins, the maximum applicable range corresponds to the operating supply voltage.

MUTE/

ST-BY

10K

20K

30K

1N4148

MUTE STBY

10

µ

F 10

µ

F

D93AU014

3) Other Features

The device is provided with both stand-by and

APPLICATION INFORMATION

HIGH-EFFICIENCY

Constraints of implementing high power solutions are the power dissipation and the size of the power supply. These are both due to the low efficiency of conventional AB class amplifier approaches.

Here below (figure 6) is described a circuit proposal for a high efficiency amplifier which can be adopted for both HI-FI and CAR-RADIO applications.

7/15

TDA7293

The TDA7293 is a monolithic MOS power amplifier which can be operated at 100V supply voltage

(120V with no signal applied) while delivering output currents up to

±

6.5 A.

This allows the use of this device as a very high power amplifier (up to 180W as peak power with

T.H.D.=10 % and Rl = 4 Ohm); the only drawback is the power dissipation, hardly manageable in the above power range.

The typical junction-to-case thermal resistance of the TDA7293 is 1 o

C/W (max= 1.5 o

C/W). To avoid that, in worst case conditions, the chip temperature exceedes 150 o

C, the thermal resistance of the heatsink must be 0.038 o

C/W (@ max ambient temperature of 50 o

C).

As the above value is pratically unreachable; a high efficiency system is needed in those cases where the continuous RMS output power is higher than 50-60 W.

The TDA7293 was designed to work also in higher efficiency way.

For this reason there are four power supply pins: two intended for the signal part and two for the power part.

T1 and T2 are two power transistors that only operate when the output power reaches a certain threshold (e.g. 20 W). If the output power increases, these transistors are switched on during the portion of the signal where more output voltage swing is needed, thus "bootstrapping" the power supply pins (#13 and #15).

The current generators formed by T4, T7, zener diodes Z1, Z2 and resistors R7,R8 define the minimum drop across the power MOS transistors of the TDA7293. L1, L2, L3 and the snubbers C9,

R1 and C10, R2 stabilize the loops formed by the

"bootstrap" circuits and the output stage of the

TDA7293.

By considering again a maximum average output power (music signal) of 20W, in case of the high efficiency application, the thermal resistance value needed from the heatsink is

2.2

o

C/W (Vs =

±

50 V and Rl= 8 Ohm).

All components (TDA7293 and power transistors T1 and T2) can be placed on a 1.5

o

C/W heatsink, with the power darlingtons electrically insulated from the heatsink.

Since the total power dissipation is less than that of a usual class AB amplifier, additional cost savings can be obtained while optimizing the power supply, even with a high heatsink .

BRIDGE APPLICATION

Another application suggestion is the BRIDGE configuration, where two TDA7293 are used.

In this application, the value of the load must not be lower than 8 Ohm for dissipation and current capability reasons.

A suitable field of application includes HI-FI/TV subwoofers realizations.

8/15

The main advantages offered by this solution are:

- High power performances with limited supply

voltage level.

- Considerably high output power even with high

load values (i.e. 16 Ohm).

With Rl= 8 Ohm, Vs =

±

25V the maximum output power obtainable is 150 W, while with Rl=16

Ohm, Vs =

±

40V the maximum Pout is 200 W.

APPLICATION NOTE: (ref. fig. 7)

Modular Application (more Devices in Parallel)

The use of the modular application lets very high power be delivered to very low impedance loads.

The modular application implies one device to act as a master and the others as slaves.

The slave power stages are driven by the master device and work in parallel all together, while the input and the gain stages of the slave device are disabled, the figure below shows the connections required to configure two devices to work together.

The master chip connections are the same as the normal single ones.

The outputs can be connected together with-

out the need of any ballast resistance.

The slave SGND pin must be tied to the negative supply.

The slave ST-BY and MUTE pins must be connected to the master ST-BY and MUTE pins.

The bootstrap lines must be connected together and the bootstrap capacitor must be increased: for N devices the boostrap capacitor must be 22

µ

F times N.

The slave IN-pin must be connected to the negative supply.

THE BOOTSTRAP CAPACITOR

For compatibility purpose with the previous devices of the family, the boostrap capacitor can be connected both between the bootstrap pin (6) and the output pin (14) or between the boostrap pin

(6) and the bootstrap loader pin (12).

When the bootcap is connected between pin 6 and 14, the maximum supply voltage in presence of output signal is limited to 100V, due the bootstrap capacitor overvoltage.

When the bootcap is connected between pins 6 and 12 the maximum supply voltage extend to the full voltage that the technology can stand: 120V.

This is accomplished by the clamp introduced at the bootstrap loader pin (12): this pin follows the output voltage up to 100V and remains clamped at 100V for higher output voltages. This feature lets the output voltage swing up to a gate-source voltage from the positive supply (V

S

-3 to 6V).

TDA7293

Figure 6: High Efficiency Application Circuit

+50V

+25V

D6

1N4001

D1 BYW98100

R20

20K

C1

1000

µ

F

63V

C3

100nF

C5

1000

µ

F

35V

C7

100nF

R22

10K

C9

330nF

R1

2

GND

R21

20K

C2

1000

µ

F

63V

C4

100nF

C6

1000

µ

35V

F

R23

10K

C8

100nF

R2

2

C10

330nF

C12 330nF

IN

PLAY

ST-BY

D5

1N4148

R12

13K

C13 10

µ

F

R13 20K

R14 30K

R15 10K

C14

10

µ

F

D2 BYW98100

-25V

D7

1N4001

-50V

3

7 13

4

9

TDA7293

1

10

8 15

14

6

T1

BDX53A

T3

BC394

R4

270

T4

BC393

R5

270

R17 270

L1 1

µ

H

2

12

D3 1N4148

R16

13K

R3 680

Z1 3.9V

C11 22

µ

F

L3 5

µ

H

C15

22

µ

F

R18 270

R7

3.3K

R8

3.3K

R6

20K

Z2 3.9V

T5

BC393

C16

1.8nF

C17

1.8nF

OUT

P ot

L2 1

µ

H D4 1N4148

T7

BC394

T8

BC394

R19 270

T2

BDX54A

T6

BC393

R9

270

R10

270

R11

20K

D97AU807C

Figure 6a: PCB and Component Layout of the fig. 6

9/15

TDA7293

Figure 6b: PCB - Solder Side of the fig. 6.

Figure 7: Modular Application Circuit

MASTER

VMUTE

VSTBY

SLAVE

C7 100nF

+Vs

C6 1000

µ

F

R3 22K

C2

22

µ

F

R2

680

R5 10K

R4 22K

IN-

C1 470nF

IN+

R1 22K

SGND

MUTE

STBY

C3 10

µ

F

2

3

4

10

9

C4 10

µ

F

MUTE

STBY

1

-

+

+Vs

STBY-GND

C7 100nF

7

BUFFER

DRIVER

11

8

-Vs

THERMAL

SHUTDOWN

C9 100nF

+PWVs

13

14

12

6

5

S/C

PROTECTION

15

-PWVs

C8 1000

µ

F

OUT

BOOT

LOADER

C5

47

µ

F

BOOTSTRAP

C10

100nF

R7

2

CLIP DET

-Vs

+Vs

C6 1000

µ

F

IN2

-

+Vs

7

BUFFER

DRIVER

11

+PWVs

13

14 OUT

IN+ 3

+

12

BOOT

LOADER

SGND 4

MUTE 10

9

STBY

MUTE

STBY

1

STBY-GND

8

-Vs

THERMAL

SHUTDOWN

C9 100nF

-Vs

S/C

PROTECTION

15

-PWVs

C8 1000

µ

F

6

5

BOOTSTRAP

D97AU808D

10/15

TDA7293

Figure 8a: Modular Application P.C. Board and Component Layout (scale 1:1) (Component SIDE)

Figure 8b: Modular Application P.C. Board and Component Layout (scale 1:1) (Solder SIDE)

11/15

TDA7293

T.H.D (%)

10

5

2

1

0.5

0.2

0.1

0.05

0.02

0.01

0.005

0.002

0.001

Figure 9: Distortion vs Output Power

0.02

0.01

0.005

0.002

0.001

T.H.D (%)

10

5

2

1

0.5

0.2

0.1

0.05

Vs = +/-29V

Rl = 4 Ohm f = 1KHz f = 20 KHz

2 5 10

Pout (W )

20

Figure 10: Distortion vs Output Power

50

2

Vs = +/-40V

Rl = 8 Ohm

5 10

Pout (W) f = 20 KHz f = 1KHz

20 50

Figure 11: Distortion vs Frequency

10

T.H.D. (%)

100

100

1

0.1

0.01

0.001

0

VS= +/- 35 V

Rl= 8 Ohm

Pout=100 mW

0.1

1

Frequency (KHz)

10

Po=50 W

100

Figure 12: Modular Application Derating Rload

vs Vsupply (ref. fig. 7)

6

5

4

3

2

1

Forbidden Area

Pd > 50W at T case

=70°C

0

20 25 30 35 40

Supply Voltage (+/-Vcc)

45 50

Figure 13: Modular Application Pd vs Vsupply

(ref. fig. 7)

60

Pd limit at Tcase=70°C

50

40

Dissipated Power for each device of the modular application

4ohm

30

8ohm

20

10

0

20 25 30 35 40

Supply Voltage (+/-Vcc)

45 50

Figure 14: Output Power vs. Supply Voltage

20

10

0

50

40

30

90

80

70

60

120

Po (W)

110

100

Rl=8 Ohm f= 1 KHz

T.H.D.=10 %

THD=0.5 %

10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40

Vs (+/-V)

12/15

TDA7293

13/15

TDA7293

DIM.

A

B

mm inch

MIN.

TYP.

MAX.

MIN.

TYP.

MAX.

5

2.65

0.197

0.104

C

E

F

G

L5

L6

0.49

0.66

1.14

1.27

2.38

1.6

0.55

0.75

1.4

0.019

0.026

0.045

0.050

0.094

0.063

0.022

0.030

0.055

G1 17.57

17.78

17.91

0.692

0.700

0.705

H1 19.6

0.772

H2

L

L1

L2

L3

L4

17.25

17.5

17.75

0.679

0.689

0.699

10.3

20.57

18.03

2.54

10.7

5.28

20.2

10.9

0.406

0.810

0.710

0.100

0.421

0.208

0.795

0.429

L7

S

2.65

1.9

S1 1.9

Dia1 3.65

2.9

0.104

2.6

0.075

2.6

0.075

3.85

0.144

0.114

0.102

0.102

0.152

OUTLINE AND

MECHANICAL DATA

Multiwatt15 H

14/15

TDA7293

Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.

The ST logo is a registered trademark of STMicroelectronics

© 2003 STMicroelectronics – Printed in Italy – All Rights Reserved

STMicroelectronics GROUP OF COMPANIES

Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco -

Singapore - Spain - Sweden - Switzerland - United Kingdom - United States.

http://www.st.com

15/15

August 2000

LM124/LM224/LM324/LM2902

Low Power Quad Operational Amplifiers

General Description

The LM124 series consists of four independent, high gain, internally frequency compensated operational amplifiers which were designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the low power supply current drain is independent of the magnitude of the power supply voltage.

Application areas include transducer amplifiers, DC gain blocks and all the conventional op amp circuits which now can be more easily implemented in single power supply systems. For example, the LM124 series can be directly operated off of the standard +5V power supply voltage which is used in digital systems and will easily provide the required interface electronics without requiring the additional

±

15V power supplies.

Unique Characteristics

n

In the linear mode the input common-mode voltage range includes ground and the output voltage can also swing to ground, even though operated from only a single power supply voltage n

The unity gain cross frequency is temperature compensated n

The input bias current is also temperature compensated

Advantages

n

Eliminates need for dual supplies n

Four internally compensated op amps in a single package n

Allows directly sensing near GND and V

OUT to GND also goes n

Compatible with all forms of logic n

Power drain suitable for battery operation

Features

n

Internally frequency compensated for unity gain n

Large DC voltage gain 100 dB n

Wide bandwidth (unity gain) 1 MHz

(temperature compensated) n

Wide power supply range:

Single supply 3V to 32V or dual supplies

±

1.5V to

±

16V n

Very low supply current drain (700 µA) — essentially independent of supply voltage n

Low input biasing current 45 nA

(temperature compensated) n

Low input offset voltage 2 mV and offset current: 5 nA n

Input common-mode voltage range includes ground n

Differential input voltage range equal to the power supply voltage n

Large output voltage swing 0V to V

+

− 1.5V

Connection Diagram

Dual-In-Line Package

DS009299-1

Top View

Order Number LM124J, LM124AJ, LM124J/883 (Note 2), LM124AJ/883 (Note 1), LM224J,

LM224AJ, LM324J, LM324M, LM324MX, LM324AM, LM324AMX, LM2902M, LM2902MX, LM324N, LM324AN,

LM324MT, LM324MTX or LM2902N LM124AJRQML and LM124AJRQMLV(Note 3)

See NS Package Number J14A, M14A or N14A

Note 1: LM124A available per JM38510/11006

Note 2: LM124 available per JM38510/11005

© 2000 National Semiconductor Corporation DS009299 www.national.com

Connection Diagram

(Continued)

Note 3: See STD Mil DWG 5962R99504 for Radiation Tolerant Device

DS009299-33

Order Number LM124AW/883, LM124AWG/883, LM124W/883 or LM124WG/883

LM124AWRQML and LM124AWRQMLV(Note 3)

See NS Package Number W14B

LM124AWGRQML and LM124AWGRQMLV(Note 3)

See NS Package Number WG14A

Schematic Diagram

(Each Amplifier)

DS009299-2 www.national.com

2

Absolute Maximum Ratings

(Note 12)

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Supply Voltage, V

+

Differential Input Voltage

Input Voltage

Input Current

(V

IN

<

−0.3V) (Note 6)

Power Dissipation (Note 4)

LM124/LM224/LM324

LM124A/LM224A/LM324A

32V

32V

−0.3V to +32V

50 mA

LM2902

26V

26V

−0.3V to +26V

50 mA

Molded DIP

Cavity DIP

Small Outline Package

Output Short-Circuit to GND

(One Amplifier) (Note 5)

V

+

15V and T

A

= 25˚C

Operating Temperature Range

LM324/LM324A

LM224/LM224A

1130 mW

1260 mW

800 mW

Continuous

1130 mW

1260 mW

800 mW

Continuous

−40˚C to +85˚C

LM124/LM124A

Storage Temperature Range

Lead Temperature (Soldering, 10 seconds)

Soldering Information

0˚C to +70˚C

−25˚C to +85˚C

−55˚C to +125˚C

−65˚C to +150˚C

260˚C

−65˚C to +150˚C

260˚C

Dual-In-Line Package

Soldering (10 seconds) 260˚C 260˚C

Small Outline Package

Vapor Phase (60 seconds)

Infrared (15 seconds)

215˚C

220˚C

215˚C

220˚C

See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” for other methods of soldering surface mount devices.

ESD Tolerance (Note 13) 250V 250V

Electrical Characteristics

V

+

= +5.0V, (Note 7), unless otherwise stated

Parameter Conditions

Min

LM124A

Typ

1

Max Min

2

LM224A

Typ

1

Max Min

3

LM324A

Typ

2

Max

3

Units

mV Input Offset Voltage

Input Bias Current

(Note 9)

Input Offset Current

Input Common-Mode

Voltage Range (Note 10)

Supply Current

Large Signal

Voltage Gain

Common-Mode

Rejection Ratio

(Note 8) T

A

= 25˚C

I

IN(+) or I

IN(−)

, V

CM

= 0V,

T

A

= 25˚C

I

IN(+) or I

IN(−)

, V

CM

= 0V,

T

A

= 25˚C

V

+

= 30V, (LM2902, V

+

= 26V),

T

A

= 25˚C

Over Full Temperature Range

R

L

=

On All Op Amps

V

+

= 30V (LM2902 V

+

= 26V)

V

+

= 5V

V

+

= 15V, R

L

2k

,

(V

O

= 1V to 11V), T

A

= 25˚C

DC, V

CM

= 0V to V

+

− 1.5V,

T

A

= 25˚C

0

50

70

20

2

1.5

0.7

100

85

50

10

V

+

−1.5

3

1.2

0

50

70

40

2

1.5

0.7

100

85

80

15

V

+

−1.5

3

1.2

0

25

65

45

5

1.5

0.7

100

85

100

30

V

+

−1.5

3

1.2

nA nA

V mA

V/mV dB

3 www.national.com

Electrical Characteristics

(Continued)

V

+

= +5.0V, (Note 7), unless otherwise stated

Parameter

Power Supply

Rejection Ratio

Amplifier-to-Amplifier

Coupling (Note 11)

Output Current Source

Sink

Short Circuit to Ground

Input Offset Voltage

V

OS

Drift

Input Offset Current

I

OS

Drift

Input Bias Current

Input Common-Mode

Voltage Range (Note 10)

Large Signal

Voltage Gain

Output Voltage

Swing

V

OH

Output Current

V

OL

Source

Sink

Conditions

V

+

= 5V to 30V

(LM2902, V

+

= 5V to 26V),

T

A

= 25˚C f = 1 kHz to 20 kHz, T

A

= 25˚C

(Input Referred)

V

IN

+

V

+

= 1V, V

= 15V, V

IN

O

= 0V,

= 2V, T

A

= 25˚C

V

IN

V

+

= 1V, V

= 15V, V

IN

+

O

= 0V,

= 2V, T

A

= 25˚C

V

IN

= 1V, V

IN

+

= 0V,

V

+

= 15V, V

O

= 200 mV, T

A

= 25˚C

(Note 5) V

+

= 15V, T

A

= 25˚C

(Note 8)

R

S

= 0

I

IN(+)

R

S

− I

IN(−)

= 0

, V

CM

= 0V

I

IN(+) or I

IN(−)

V

+

= +30V

(LM2902, V

+

= 26V)

V

+

R

L

V

+

= +15V (V

O

Swing = 1V to 11V)

2 k

= 30V

(LM2902, V

+

= 26V)

R

R

L

L

= 2 k

= 10 k

V

+

= 5V, R

L

= 10 k

V

O

= 2V V

IN

+

= +1V,

V

V

+

= 0V,

= 15V

V

IN

= +1V,

V

V

+

+

= 0V,

= 15V

Min

LM124A

Typ Max Min

LM224A

Typ Max Min

LM324A

Typ Max

Units

65 100

−120

65 100

−120

65 100

−120 dB dB

20 40

10 20

20 40

10 20

20 40

10 20 mA

12

0

50

40

7

10

40

60

4

20

30

200

100

V

+

−2 0

12 50

40

7

10

40

60

4

20

30

200

100

V

+

−2 0

12 50 µA

40

7

10

40

60

5

30

75 mA mV

µV/˚C nA

300 pA/˚C

200

V

+

−2 nA

V

25

26

27

10

28

5

20

10 15

20

25

26

27

10

28

5

20

20

15

26

27

10

28

5

20

20

V/mV

V mV mA

5 8 5 8

Electrical Characteristics

V

+

= +5.0V, (Note 7), unless otherwise stated

Parameter

Input Offset Voltage

Input Bias Current

(Note 9)

Input Offset Current

Input Common-Mode

Voltage Range (Note 10)

Supply Current

Large Signal

Voltage Gain

Common-Mode

Rejection Ratio

Power Supply

Rejection Ratio

Conditions

(Note 8) T

A

= 25˚C

I

IN(+) or I

IN(−)

, V

CM

= 0V,

T

A

= 25˚C

I

IN(+) or I

IN(−)

, V

CM

= 0V,

T

A

= 25˚C

V

+

= 30V, (LM2902, V

+

= 26V),

T

A

= 25˚C

Over Full Temperature Range

R

L

=

On All Op Amps

V

+

= 30V (LM2902 V

+

= 26V)

V

+

= 5V

V

+

= 15V, R

L

2k

,

(V

O

= 1V to 11V), T

A

= 25˚C

DC, V

CM

= 0V to V

+

− 1.5V,

T

A

= 25˚C

V

+

= 5V to 30V

(LM2902, V

+

= 5V to 26V),

Min

LM124/LM224

Typ Max Min

2 5

LM324

Typ Max Min

2 7

LM2902

Typ Max

2 7

Units

mV

45

3

150

30

45

5

250

50

45

5

250

50 nA nA

0 V

+

−1.5

0 V

+

−1.5

0 V

+

−1.5

V

50

1.5

0.7

100 mA

3

1.2

25

1.5

0.7

100

3

1.2

25

1.5

0.7

100

3

1.2

V/mV

70 85 65 85 50 70 dB

65 100 65 100 50 100 dB www.national.com

4

Electrical Characteristics

(Continued)

V

+

= +5.0V, (Note 7), unless otherwise stated

Parameter Conditions

Min

LM124/LM224

Typ Max Min

LM324

Typ Max Min

LM2902

Typ Max

Units

Amplifier-to-Amplifier

Coupling (Note 11)

Output Current Source

Sink

Short Circuit to Ground

Input Offset Voltage

V

OS

Drift

Input Offset Current

I

OS

Drift

Input Bias Current

Input Common-Mode

Voltage Range (Note 10)

Large Signal

Voltage Gain

Output Voltage

Swing

Output Current

V

OH

V

OL

Source

Sink

T

A

= 25˚C f = 1 kHz to 20 kHz, T

A

= 25˚C

(Input Referred)

V

IN

+

= 1V, V

IN

= 0V,

V

+

= 15V, V

O

= 2V, T

A

= 25˚C

V

IN

= 1V, V

IN

+

= 0V,

V

+

= 15V, V

O

= 2V, T

A

= 25˚C

V

IN

= 1V, V

IN

+

= 0V,

V

+

= 15V, V

O

= 200 mV, T

A

(Note 5) V

+

= 15V, T

A

= 25˚C

= 25˚C

(Note 8)

R

S

= 0

I

IN(+)

R

S

− I

IN(−)

= 0

, V

CM

= 0V

I

IN(+) or I

IN(−)

V

+

= +30V

(LM2902, V

+

= 26V)

V

+

R

L

V

+

= +15V (V

O

Swing = 1V to 11V)

2 k

= 30V

(LM2902, V

+

= 26V)

R

R

L

L

= 2 k

= 10 k

V

+

= 5V, R

L

= 10 k

V

O

= 2V V

IN

+

= +1V,

V

V

+

= 0V,

= 15V

V

IN

= +1V,

V

V

+

+

= 0V,

= 15V

20

10

12

0

25

26

27

10

5

−120

40

20

50

40

7

10

40

28

5

20

8

60

7

100

300

V

+

−2

20

20

10

12

0

15

26

27

10

5

−120

40

20

50

40

7

10

40

28

5

20

8

150

500

V

+

60

9

−2

20

20

10

12

0

15

22

23

10

5

−120

40

20

50

40

7

45

10

40

24

5

20

8

V

+

60

10

200

500

−2

100 dB mA

µA mA mV

µV/˚C nA pA/˚C nA

V

V/mV

V mV mA

Note 4: For operating at high temperatures, the LM324/LM324A/LM2902 must be derated based on a +125˚C maximum junction temperature and a thermal resistance of 88˚C/W which applies for the device soldered in a printed circuit board, operating in a still air ambient. The LM224/LM224A and LM124/LM124A can be derated based on a +150˚C maximum junction temperature. The dissipation is the total of all four amplifiers — use external resistors, where possible, to allow the amplifier to saturate of to reduce the power which is dissipated in the integrated circuit.

Note 5: Short circuits from the output to V

+ can cause excessive heating and eventual destruction. When considering short circuits to ground, the maximum output current is approximately 40 mA independent of the magnitude of V

+

. At values of supply voltage in excess of +15V, continuous short-circuits can exceed the power dissipation ratings and cause eventual destruction. Destructive dissipation can result from simultaneous shorts on all amplifiers.

Note 6: This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP transistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also lateral NPN parasitic transistor action on the

IC chip. This transistor action can cause the output voltages of the op amps to go to the V

+ voltage level (or to ground for a large overdrive) for the time duration that an input is driven negative. This is not destructive and normal output states will re-establish when the input voltage, which was negative, again returns to a value greater than −0.3V (at 25˚C).

Note 7: These specifications are limited to −55˚C

T

T

A

A

+125˚C for the LM124/LM124A. With the LM224/LM224A, all temperature specifications are limited to −25˚C

+85˚C, the LM324/LM324A temperature specifications are limited to 0˚C

T

A

+70˚C, and the LM2902 specifications are limited to −40˚C

T

A

+85˚C.

Note 8: V

O

.

1.4V, R

S

= 0

Ω with V

+ from 5V to 30V; and over the full input common-mode range (0V to V

+

− 1.5V) for LM2902, V

+ from 5V to 26V.

Note 9: The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the output so no loading change exists on the input lines.

Note 10: The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V (at 25˚C). The upper end of the common-mode voltage range is V

+

V

+

.

− 1.5V (at 25˚C), but either or both inputs can go to +32V without damage (+26V for LM2902), independent of the magnitude of

Note 11: Due to proximity of external components, insure that coupling is not originating via stray capacitance between these external parts. This typically can be detected as this type of capacitance increases at higher frequencies.

Note 12: Refer to RETS124AX for LM124A military specifications and refer to RETS124X for LM124 military specifications.

Note 13: Human body model, 1.5 k

Ω in series with 100 pF.

5 www.national.com

Typical Performance Characteristics

Input Voltage Range Input Current

Supply Current

DS009299-34

Voltage Gain

DS009299-35

Open Loop Frequency

Response

DS009299-36

Common Mode Rejection

Ratio

DS009299-37

DS009299-38

DS009299-39 www.national.com

6

Typical Performance Characteristics

(Continued)

Voltage Follower Pulse

Response

Voltage Follower Pulse

Response (Small Signal)

Large Signal Frequency

Response

DS009299-40

Output Characteristics

Current Sourcing

DS009299-41

Output Characteristics

Current Sinking

DS009299-42

Current Limiting

DS009299-43

DS009299-44

7

DS009299-45 www.national.com

Typical Performance Characteristics

(Continued)

Input Current (LM2902 only) Voltage Gain (LM2902 only)

DS009299-46

Application Hints

The LM124 series are op amps which operate with only a single power supply voltage, have true-differential inputs, and remain in the linear mode with an input common-mode voltage of 0 V

DC

. These amplifiers operate over a wide range of power supply voltage with little change in performance characteristics. At 25˚C amplifier operation is possible down to a minimum supply voltage of 2.3 V

DC

.

The pinouts of the package have been designed to simplify

PC board layouts. Inverting inputs are adjacent to outputs for all of the amplifiers and the outputs have also been placed at the corners of the package (pins 1, 7, 8, and 14).

Precautions should be taken to insure that the power supply for the integrated circuit never becomes reversed in polarity or that the unit is not inadvertently installed backwards in a test socket as an unlimited current surge through the resulting forward diode within the IC could cause fusing of the internal conductors and result in a destroyed unit.

Large differential input voltages can be easily accommodated and, as input differential voltage protection diodes are not needed, no large input currents result from large differential input voltages. The differential input voltage may be larger than V

+ without damaging the device. Protection should be provided to prevent the input voltages from going negative more than −0.3 V

DC

(at 25˚C). An input clamp diode with a resistor to the IC input terminal can be used.

To reduce the power supply drain, the amplifiers have a class A output stage for small signal levels which converts to class B in a large signal mode. This allows the amplifiers to both source and sink large output currents. Therefore both

NPN and PNP external current boost transistors can be used to extend the power capability of the basic amplifiers. The output voltage needs to raise approximately 1 diode drop above ground to bias the on-chip vertical PNP transistor for output current sinking applications.

For ac applications, where the load is capacitively coupled to the output of the amplifier, a resistor should be used, from the output of the amplifier to ground to increase the class A bias current and prevent crossover distortion.

DS009299-47

Where the load is directly coupled, as in dc applications, there is no crossover distortion.

Capacitive loads which are applied directly to the output of the amplifier reduce the loop stability margin. Values of

50 pF can be accommodated using the worst-case non-inverting unity gain connection. Large closed loop gains or resistive isolation should be used if larger load capacitance must be driven by the amplifier.

The bias network of the LM124 establishes a drain current which is independent of the magnitude of the power supply voltage over the range of from 3 V

DC to 30 V

DC

.

Output short circuits either to ground or to the positive power supply should be of short time duration. Units can be destroyed, not as a result of the short circuit current causing metal fusing, but rather due to the large increase in IC chip dissipation which will cause eventual failure due to excessive junction temperatures. Putting direct short-circuits on more than one amplifier at a time will increase the total IC power dissipation to destructive levels, if not properly protected with external dissipation limiting resistors in series with the output leads of the amplifiers. The larger value of output source current which is available at 25˚C provides a larger output current capability at elevated temperatures

(see typical performance characteristics) than a standard IC op amp.

The circuits presented in the section on typical applications emphasize operation on only a single power supply voltage.

If complementary power supplies are available, all of the standard op amp circuits can be used. In general, introducing a pseudo-ground (a bias voltage reference of V

+

/2) will allow operation above and below this value in single power supply systems. Many application circuits are shown which take advantage of the wide input common-mode voltage range which includes ground. In most cases, input biasing is not required and input voltages which range to ground can easily be accommodated.

www.national.com

8

Typical Single-Supply Applications

(V

+

= 5.0 V

DC

)

Non-Inverting DC Gain (0V Input = 0V Output)

* R not needed due to temperature independent I

IN

(V

DC Summing Amplifier

IN’S

0 V

DC and V

O

V

DC

)

DS009299-5

Power Amplifier

Where: V

0

(V

1

= V

1

+ V

2

+ V

2

)

(V

3

− V

3

+ V

4

− V

4

) to keep V

O

>

0 V

DC

DS009299-6

V

0

= 0 V

DC

A

V for V

= 10

IN

= 0 V

DC

DS009299-7

9 www.national.com

Typical Single-Supply Applications

(V

+

= 5.0 V

DC

) (Continued)

LED Driver “BI-QUAD” RC Active Bandpass Filter

DS009299-8 www.national.com

Fixed Current Sources

f o

= 1 kHz

Q = 50

A

V

= 100 (40 dB)

Lamp Driver

DS009299-9

DS009299-11

DS009299-10

10

Typical Single-Supply Applications

(V

+

= 5.0 V

DC

) (Continued)

Current Monitor

Driving TTL

* (Increase R1 for I

L small)

Voltage Follower

DS009299-12

DS009299-14

Pulse Generator

DS009299-13

DS009299-15

11 www.national.com

Typical Single-Supply Applications

(V

+

= 5.0 V

DC

) (Continued)

Squarewave Oscillator Pulse Generator

I

O

= 1 amp/volt V

IN

(Increase R

E for I o small)

DS009299-16

High Compliance Current Sink

DS009299-17

DS009299-18 www.national.com

12

Typical Single-Supply Applications

(V

+

= 5.0 V

DC

) (Continued)

Low Drift Peak Detector

Comparator with Hysteresis

DS009299-19

Ground Referencing a Differential Input Signal

DS009299-20

V

O

= V

R

DS009299-21

13 www.national.com

Typical Single-Supply Applications

(V

+

= 5.0 V

DC

) (Continued)

Voltage Controlled Oscillator Circuit

* Wide control voltage range: 0 V

DC

V

C

2 (V

+

−1.5 V

DC

)

Photo Voltaic-Cell Amplifier

DS009299-22

AC Coupled Inverting Amplifier

DS009299-23

DS009299-24 www.national.com

14

Typical Single-Supply Applications

(V

+

= 5.0 V

DC

) (Continued)

AC Coupled Non-Inverting Amplifier

f

O

= 1 kHz

Q = 1

A

V

= 2

DC Coupled Low-Pass RC Active Filter

DS009299-25

DS009299-26

15 www.national.com

Typical Single-Supply Applications

(V

+

= 5.0 V

DC

) (Continued)

High Input Z, DC Differential Amplifier

High Input Z Adjustable-Gain

DC Instrumentation Amplifier

DS009299-27

DS009299-28 www.national.com

16

Typical Single-Supply Applications

(V

+

= 5.0 V

DC

) (Continued)

Using Symmetrical Amplifiers to

Reduce Input Current (General Concept)

Bridge Current Amplifier

DS009299-30

DS009299-29

Bandpass Active Filter

f

O

= 1 kHz

Q = 25

17

DS009299-31 www.national.com

Physical Dimensions

inches (millimeters) unless otherwise noted

Ceramic Dual-In-Line Package (J)

Order Number JL124ABCA, JL124BCA, JL124ASCA, JL124SCA, LM124J,

LM124AJ, LM124AJ/883, LM124J/883, LM224J, LM224AJ or LM324J

NS Package Number J14A

www.national.com

MX S.O. Package (M)

Order Number LM324M, LM324MX, LM324AM, LM324AMX, LM2902M or LM2902MX

NS Package Number M14A

18

Physical Dimensions

inches (millimeters) unless otherwise noted (Continued)

Molded Dual-In-Line Package (N)

Order Number LM324N, LM324AN or LM2902N

NS Package Number N14A

Ceramic Flatpak Package

Order Number JL124ABDA, JL124ABZA, JL124ASDA, JL124BDA, JL124BZA,

JL124SDA, LM124AW/883, LM124AWG/883, LM124W/883 or LM124WG/883

NS Package Number W14B

19 www.national.com

Physical Dimensions

inches (millimeters) unless otherwise noted (Continued)

14-Pin TSSOP

Order NumberLM324MT or LM324MTX

NS Package Number MTC14

LIFE SUPPORT POLICY

NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT

DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL

COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user.

2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.

National Semiconductor

Corporation

Americas

Tel: 1-800-272-9959

Fax: 1-800-737-7018

Email: [email protected]

www.national.com

National Semiconductor

Europe

Fax: +49 (0) 180-530 85 86

Email: [email protected]

Deutsch Tel: +49 (0) 69 9508 6208

English Tel: +44 (0) 870 24 0 2171

Français Tel: +33 (0) 1 41 91 8790

National Semiconductor

Asia Pacific Customer

Response Group

Tel: 65-2544466

Fax: 65-2504466

Email: [email protected]

National Semiconductor

Japan Ltd.

Tel: 81-3-5639-7560

Fax: 81-3-5639-7507

National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.

1/2 PAGE

HTP-8230

EXPLODED VIEW PARTS LIST

NOTE : THE COMPONENTS IDENTIFIED BY THE MARK

!

ARE CRITICAL FOR RISK OF FIRE AND

ELECTRIC SHOCK. REPLACE ONLY WITH PART

NUMBER SPECIFIED.

REF. NO.

PART NAME

EXPLODED

SKW-8230 : POWERED SUBWOOFER

EXPLODED

EXPLODED

EXPLODED

SP01

SP02

SP03

CABINET ASS'Y

PLASTIC FOOT

STAND BOARD

EXPLODED

EXPLODED

EXPLODED

EXPLODED

EXPLODED

EXPLODED

SP04

SP05

SP06

SP08

A01

A02

LOGO PLATE

WOOD SCREW

WOOD SCREW

WOOFER SPEAKER

REAR PANEL

AC CORD

DESCRIPTION Q'TY PART NO.

SKW-8230

D87.5 x D37.5 x H50 HIPS

F2905-GW

1 ANK8S404S-BM10

4 BPE8000040001

1 ANF860005-BM10

SKW-8230 / ONKYO NAME PLATE

8 x 4 x L75 PAN HEAD (FOR FOOT)

4STT+20A (FOR AMPLIFIER / SP)

20cm 4ohm 50W

1

8

18

1

BPL800150-0001

NST8550514750

837440204

W20178A

"SKW-8230" SPCC 190 x 120 x T2.0mm

1 GSE400175-2006

LINE CORD 2P 1800mm BLK POLARIZE 1 VPA0040120010

EXPLODED

EXPLODED

EXPLODED

EXPLODED

A03

A04

A05

F902

EXPLODED

EXPLODED

F903

U01

EXPLODED

<Note>

BUSHING

POWER TRANSFORMER

SCREW

FUSE

FUSE

MAIN PC BOARD ASS'Y

AC LINE BUSHING

DC30V, DC2.3A, 120V / 60Hz 100W

M4.0 x P0.7 x L25mm (FOR TRANS)

4A / 250V SLOW WALT

4A / 250V SLOW WALT

MAIN PC BOARD ASS'Y

1

1

4

1

1

1

DBU001002-0011

TTI1120010120

HSD1431033250

KSA0204000011

KSA0204000011

APE4012115001

EXPLODED

U01 : MAIN PC BOARD ASS'Y = PCB BRACKET + HEAT SINK + ALL PARTS FOR MAIN PC BOARD

EXPLODED

U02 INPUT PC BOARD ASS'Y INPUT PC BOARD ASS'Y 1 APE4012125001

EXPLODED

<Note>

EXPLODED

U02 : INPUT PC BOARD ASS'Y = INPUT PC BOARD with RCA JACK + CORD ASS'Y

EXPLODED

U03 VR / LED PC BOARD ASS'Y VR / LED PC BOARD ASS'Y

EXPLODED

<Note>

1 APE4012135001

EXPLODED

U03 : VR / LED PC BOARD ASS'Y = VR / LED PC BOARD with VR / LED / CORD ASS'Y etc.

EXPLODED

SKF-8230F : FRONT SPEAKERS (L / R)

EXPLODED

EXPLODED

EXPLODED

EXPLODED

SP10

SP11

SP12

SP13

COMPLETE UNIT

BACK LABEL (L)

COMPLETE UNIT

BACK LABEL (R)

"SKF-8230F (L)" without serial numbering

"SKF-8230F (R)" without serial numbering

1 ASL8M404S-BM10

1 YLB810006-FL10

1 ASL8M404S-BM11

1 YLB810006-FR10

EXPLODED

SKC-8230C : CENTER SPEAKER

EXPLODED

EXPLODED

SP14

SP15

COMPLETE UNIT

BACK LABEL

EXPLODED

SKM-8230S : SURROUND SPEAKERS (L / R)

"SKC-8230C" without serial numbering

EXPLODED

EXPLODED

SP16

SP17

COMPLETE UNIT

BACK LABEL (L)

"SKM-8230S (L)" without serial numbering

EXPLODED

EXPLODED

SP18

SP19

COMPLETE UNIT

BACK LABEL (R)

"SKM-8230S (R)" without serial numbering

1

1

1

1

1

1

ASL8C404S-BM10

YLB810006-C010

ASL8S404S-BM10

YLB810006-SL10

ASL8S404S-BM11

YLB810006-SR10

MARK

!

!

!

!

!

PRINTED CIRCUIT BOARD PARTS LIST

PWB

PWB

CIRCUIT NO. PART NAME

IC501 POWER IC

DB901 DIODE

DESCRIPTION

IC 15 PIN TDA7293

RS402L 4A 100V

2/2 PAGE

HTP-8230

Q'TY PART NO.

1 RHI007293-0001

1 RHD2040100011

MARK

!

HTP-8230

ONKYO CORPORATION

Sales & Product Planning Div. : 2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN

Tel: 072-831-8023 Fax: 072-831-8124

ONKYO U.S.A. CORPORATION

18 Park Way, Upper Saddle River, N.J. 07458, U.S.A.

Tel: 201-785-2600 Fax: 201-785-2650 http://www.onkyousa.com

ONKYO EUROPE ELECTRONICS GmbH

Liegnitzerstrasse 6, 82194 Groebenzell, GERMANY

Tel: +49-8142-4401-0 Fax: +49-8142-4401-555 http://www.onkyo.net

ONKYO CHINA LIMITED

Units 2102-2107, Metroplaza Tower I, 223 Hing Fong Road, Kwai Chung,

N.T., HONG KONG Tel: 852-2429-3118 Fax: 852-2428-9039

HOMEPAGE

http://www.onkyo.com/

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