TDA8943SF

7 W mono Bridge Tied Load (BTL) audio amplifier

14 April 1999 Preliminary specification

1.

General description

The TDA8943SF is a single-channel audio power amplifier with an output power of

7 W at an 8

Ω

load and a 12 V supply. The circuit contains a Bridge Tied Load (BTL) amplifier with an all-NPN output stage and standby/mute logic. The TDA8943SF comes in a 9-lead single in-line (SIL) medium power package. The TDA8943SF is printed-circuit board (PCB) compatible with all other types in the TDA894x family.

One PCB footprint accommodates both the mono and the stereo products.

2.

Features

■ Few external components

■ Fixed gain

■ Standby and mute mode

■ No on/off switching plops

■ Low standby current

■ High supply voltage ripple rejection

■ Outputs short-circuit protected to ground, supply and across the load

■ Thermally protected

■ Printed-circuit board compatible, see

Table 3 “Product family overview” .

3.

Applications

■ Mains fed applications (e.g. TV sound)

■ PC audio

■ Portable audio.

4.

Quick reference data

Table 1: Quick reference data

I

I

Symbol Parameter

V q

CC stb

Conditions supply voltage quiescent supply current V

CC

= 12 V; R

L

=

∞ standby supply current -

-

Min Typ Max Unit

6 12 18 V

-

15 22

10 mA

µ

A

Philips Semiconductors

TDA8943SF

7 W mono BTL audio amplifier

Table 1: Quick reference data …continued

Symbol Parameter

P o

THD output power

Conditions

THD = 10%; R

L

= 8

Ω

;

V

CC

= 12 V total harmonic distortion P o

= 1 W

G v voltage gain

SVRR supply voltage ripple rejection

Min Typ Max Unit

6 7 W

-

31

50 -

0.03

32

-

0.1

33

% dB dB

5.

Ordering information

Table 2: Ordering information

Type number Package

Name Description

TDA8943SF SIL9MPF plastic single in-line medium power package with fin; 9 leads

Version

SOT110-1

5.1 Ordering options

Table 3: Product family overview

Type number Package Description

TDA8941P

TDA8942P

DIP8

DIP16

1.5 W mono Bridge Tied Load (BTL) audio amplifier

2 x 1.5 W stereo Bridge Tied Load (BTL) audio amplifier

TDA8943SF SIL9MPF

TDA8944J DBS17P

TDA8945S

TDA8946J

SIL9P

DBS17P

7 W mono Bridge Tied Load (BTL) audio amplifier

2 x 7 W stereo Bridge Tied Load (BTL) audio amplifier

15 W mono Bridge Tied Load (BTL) audio amplifier

2 x 15 W stereo Bridge Tied Load (BTL) audio amplifier

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Philips Semiconductors

TDA8943SF

7 W mono BTL audio amplifier

6.

Block diagram

idth

IN −

IN

+

MODE

SVR

VCC

2

TDA8943SF

1

5

4

3

VCC

7 STANDBY/

MUTE LOGIC

6

20 k

Ω k

20

Ω

SHORT CIRCUIT

AND

TEMPERATURE

PROTECTION

8

MBK942

GND

OUT

−

OUT +

Fig 1.

Block diagram.

7.

Pinning information

7.1 Pinning

handbook, halfpage

OUT

−

1

VCC

OUT

+

2

3

IN

+

4

IN

−

5 TDA8943SF

SVR 6

MODE 7

GND 8 n.c.

9

MBK941

Fig 2.

Pin configuration.

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Philips Semiconductors

TDA8943SF

7 W mono BTL audio amplifier

7.2 Pin description

Table 4: Pin description

Symbol

OUT

−

V

CC

OUT+

Pin

1

2

3

IN+

IN

−

SVR

MODE

GND n.c.

6

7

4

5

8

9

Description negative loudspeaker terminal supply voltage positive loudspeaker terminal positive input negative input half supply voltage decoupling (ripple rejection) mode selection input (standby, mute, operating) ground not connected

8.

Functional description

The TDA8943SF is a mono BTL audio power amplifier capable of delivering 7 W output power to an 8

Ω

load at THD = 10%, using a 12 V power supply and an external heatsink. The voltage gain is fixed at 32 dB.

With the three-level MODE input the device can be switched from ‘standby’ to ‘mute’ and to ‘operating’ mode.

The TDA8943SF outputs are protected by an internal thermal shutdown protection mechanism and a short-circuit protection.

8.1 Power amplifier

The power amplifier is a Bridge Tied Load (BTL) amplifier with an all-NPN output stage, capable of delivering a peak output current of 1.5 A.

The BTL principle offers the following advantages:

• Lower peak value of the supply current

• The ripple frequency on the supply voltage is twice the signal frequency

• No expensive DC-blocking capacitor

• Good low frequency performance.

9397 750 04877

Preliminary specification

8.2 Mode selection

The TDA8943SF has three functional modes, which can be selected by applying the proper DC voltage to pin MODE.

Standby — In this mode the current consumption is very low and the outputs are floating. The device is in standby mode when V

MODE

> (V

CC

−

0.5 V), or when the

MODE pin is left floating.

Mute — In this mode the amplifier is DC-biased but not operational (no audio output).

This allows the input coupling capacitors to be charged to avoid pop-noise. The device is in mute mode when 2.5 V < V

MODE

< (V

CC

−

1.5 V).

14 April 1999

© Philips Electronics N.V. 1999. All rights reserved.

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Philips Semiconductors

TDA8943SF

7 W mono BTL audio amplifier

Operating — In this mode the amplifier is operating normally. The operating mode is activated at V

MODE

< 0.5 V.

9.

Limiting values

Table 5: Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).

Symbol Parameter Conditions

I

V

V

T

T

I

CC

ORM stg amb supply voltage input voltage repetitive peak output current storage temperature operating ambient temperature operating no signal non-operating

[1]

Min

−

0.3

−

0.3

−

0.3

-

−

55

−

40

P tot

V

CC(sc) total power dissipation supply voltage to guarantee short-circuit protection

-

-

[1] Applies to all functional modes.

Max

+18

+25

Unit

V

V

V

CC

+ 0.3 V

2

+150

+85

A

°

C

°

C

<tbf>

<tbf>

W

V

10. Thermal characteristics

Table 6: Thermal characteristics

Symbol

R th(j-a)

R th(j-c)

Parameter thermal resistance from junction to ambient thermal resistance from junction to case

Conditions in free air in free air

Value Unit

65 K/W

10 K/W

11. Static characteristics

Table 7: Static characteristics

V

CC

= 12 V; T amb

= 25

°

C; R

L

= 8

Ω

; V

MODE

= 0 V; V i

= 0 V; measured in test circuit

Figure 3 ; unless otherwise specified.

Symbol Parameter Conditions Min Typ Max Unit

I

V

CC

I q

I stb

V

O

∆

V

OUT

[3]

V

MODE

MODE supply voltage quiescent supply current standby supply current

DC output voltage differential output voltage offset mode selection input voltage mode selection input current operating

R

L

=

∞

V

MODE

= V

CC operating mode mute mode standby mode

0 < V

MODE

< V

CC

[1]

-

[2]

-

-

-

-

6

0

2.5

V

CC

−

0.5

-

-

-

-

-

-

12

15

6 -

18

22

10

200

V mA

µ

V

A mV

0.5

V

V

CC

−

1.5

V

V

CC

20

V

µ

A

[1] With a load connected at the outputs the quiescent current will increase, the maximum of this increase being equal to the differential output voltage offset

(∆

V

OUT

) divided by the load resistance (R

L

).

[2] The DC output voltage with respect to ground is approximately 0.5V

CC

.

[3]

∆

V

OUT

=

|

V

OUT+

−

V

OUT

−

|

.

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Philips Semiconductors

TDA8943SF

7 W mono BTL audio amplifier

12. Dynamic characteristics

Table 8: Dynamic characteristics

V

CC

= 12 V; T amb

= 25 ° C; R

L

= 8 Ω ; f = 1 kHz; V

MODE

= 0 V; measured in test circuit

Figure 3 ; unless otherwise specified.

Symbol Parameter Conditions Min Typ Max Unit

P o output power THD = 10%

THD = 0.5%

6

4

7

5

-

-

W

W

THD

G v

Z i(dif)

V n(o)

SVRR

V o(mute) total harmonic distortion voltage gain differential input impedance noise output voltage supply voltage ripple rejection output voltage f

P o

= 1 W ripple f ripple

= 1 kHz

= 100 Hz to 20 kHz mute mode

[1]

-

[2]

-

[3]

-

31

70

[2]

50

-

-

0.03

32

90

90

<tbf>

-

-

0.1

33

110

120

50

% dB k

Ω

µ

V dB dB

µ

V

[1] The noise output voltage is measured at the output in a frequency range from 20 Hz to 20 kHz (unweighted), with a source impedance

R source

= 0

Ω

at the input.

[2] Supply voltage ripple rejection is measured at the output, with a source impedance R source

= 0

Ω at the input. The ripple voltage is a sine wave with a frequency f ripple

and an amplitude of 100 mV (RMS), which is applied to the positive supply rail.

[3] Output voltage in mute mode is measured with an input voltage of 1 V (RMS) in a bandwidth of 20 kHz, so including noise.

13. Application information

handbook, full pagewidth

100 nF

VCC

2

Rsource

220 nF

IN

−

5

TDA8943SF

1 OUT

−

Vi

MICROCONTROLLER

220 nF

IN

+

4 3 OUT

+

MODE 7

SVR 6

10

µ

F

VCC

STANDBY/

MUTE LOGIC 20 k

Ω

20 k

Ω

SHORT CIRCUIT

AND

TEMPERATURE

PROTECTION

8

GND MBK943

VCC

1000

µ

F

RL

8

Ω

Fig 3.

Application diagram.

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Preliminary specification

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Philips Semiconductors

TDA8943SF

7 W mono BTL audio amplifier

14. Test information

14.1 Quality information

The General Quality Specification for Integrated Circuits, SNW-FQ-611-part E is applicable and reference can be found in the Quality Reference Handbook, chapter

Quality standards for customers. The handbook can be ordered using the code

9397 750 00192.

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15. Package outline

SIL9MPF: plastic single in-line medium power package with fin; 9 leads

D

TDA8943SF

7 W mono BTL audio amplifier

SOT110-1

P

D

1 q

P

1

A

2 q

1 q

2

A

3

A

A

4

E pin 1 index

Z

1 b

2 e

9 b b

1 w M

L

Q c

0 5 scale

10 mm

DIMENSIONS (mm are the original dimensions)

UNIT A

A

2 max.

A

3

A

4 b b

1 b

2 mm

18.5

17.8

3.7

8.7

8.0

15.8

15.4

1.40

1.14

0.67

0.50

1.40

1.14

c

0.48

0.38

D

(1)

21.8

21.4

D

1

21.4

20.7

E

(1) e

6.48

6.20

2.54

L P

3.9

3.4

2.75

2.50

P

1

3.4

3.2

Q q q

1

1.75

1.55

15.1

14.9

4.4

4.2

q

2

5.9

5.7

w

0.25

Z

(1) max.

1.0

Note

1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

OUTLINE

VERSION

SOT110-1

IEC

REFERENCES

JEDEC EIAJ

EUROPEAN

PROJECTION

ISSUE DATE

92-11-17

95-02-25

Fig 4.

SIL9MPF package outline.

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Philips Semiconductors

TDA8943SF

7 W mono BTL audio amplifier

16. Soldering

16.1 Introduction to soldering through-hole mount packages

This text gives a brief insight to wave, dip and manual soldering. A more in-depth account of soldering ICs can be found in our Data Handbook IC26; Integrated Circuit

Packages (document order number 9398 652 90011).

Wave soldering is the preferred method for mounting of through-hole mount IC packages on a printed-circuit board.

16.2 Soldering by dipping or by solder wave

The maximum permissible temperature of the solder is 260

°

C; solder at this temperature must not be in contact with the joints for more than 5 seconds. The total contact time of successive solder waves must not exceed 5 seconds.

The device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the specified maximum storage temperature (T stg(max)

).

If the printed-circuit board has been pre-heated, forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit.

16.3 Manual soldering

Apply the soldering iron (24 V or less) to the lead(s) of the package, either below the seating plane or not more than 2 mm above it. If the temperature of the soldering iron bit is less than 300

°

C it may remain in contact for up to 10 seconds. If the bit temperature is between 300 and 400

°

C, contact may be up to 5 seconds.

16.4 Package related soldering information

Table 9: Suitability of through-hole mount IC packages for dipping and wave soldering methods

Package

DBS, DIP, HDIP, SDIP, SIL

Soldering method

Dipping suitable

Wave suitable [1]

[1] For SDIP packages, the longitudinal axis must be parallel to the transport direction of the printed-circuit board.

17. Revision history

Rev Date

01 990414 -

CPCN Description

Preliminary specification; initial version.

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TDA8943SF

7 W mono BTL audio amplifier

18. Data sheet status

Datasheet status

Objective specification

Preliminary specification Qualification

Product specification

Product status

Definition [1]

Development This data sheet contains the design target or goal specifications for product development. Specification may change in any manner without notice.

Production

This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips

Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product.

This data sheet contains final specifications. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product.

[1] Please consult the most recently issued data sheet before initiating or completing a design.

19. Definitions 20. Disclaimers

Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook.

Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device.

These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability.

Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification.

Life support — These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.

Right to make changes — Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance.

Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no licence or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified.

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TDA8943SF

7 W mono BTL audio amplifier

Philips Semiconductors - a worldwide company

Argentina: see South America

Australia: Tel. +61 29 805 4455, Fax. +61 29 805 4466

Austria: Tel. +43 160 101, Fax. +43 160 101 1210

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Belgium: see The Netherlands

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Middle East: see Italy

For all other countries apply to: Philips Semiconductors,

Marketing & Sales Communications,

Building BE, P.O. Box 218, 5600 MD EINDHOVEN,

The Netherlands, Fax. +31 40 272 4825

Netherlands: Tel. +31 40 278 2785, Fax. +31 40 278 8399

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Slovenia: see Italy

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Yugoslavia: Tel. +381 11 62 5344, Fax. +381 11 63 5777

Internet: http://www.semiconductors.philips.com

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16.2

16.3

16.4

17

18

19

20

Contents

5

5.1

6

7

7.1

7.2

8

8.1

8.2

3

4

1

2

9

10

11

12

13

14

14.1

15

16

16.1

General description. . . . . . . . . . . . . . . . . . 1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Applications. . . . . . . . . . . . . . . . . . . . . . . . 1

Quick reference data. . . . . . . . . . . . . . . . . 1

Ordering information . . . . . . . . . . . . . . . . 2

Ordering options. . . . . . . . . . . . . . . . . . . . 2

Block diagram . . . . . . . . . . . . . . . . . . . . . . 3

Pinning information . . . . . . . . . . . . . . . . . 3

Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Pin description . . . . . . . . . . . . . . . . . . . . . 4

Functional description . . . . . . . . . . . . . . . 4

Power amplifier. . . . . . . . . . . . . . . . . . . . . 4

Mode selection . . . . . . . . . . . . . . . . . . . . . 4

Limiting values . . . . . . . . . . . . . . . . . . . . . 5

Thermal characteristics . . . . . . . . . . . . . . 5

Static characteristics . . . . . . . . . . . . . . . . 5

Dynamic characteristics . . . . . . . . . . . . . . 6

Application information . . . . . . . . . . . . . . 6

Test information . . . . . . . . . . . . . . . . . . . . 7

Quality information . . . . . . . . . . . . . . . . . . 7

Package outline . . . . . . . . . . . . . . . . . . . . . 8

Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Introduction to soldering through-hole mount

packages . . . . . . . . . . . . . . . . . . . . . . . . . 9

Soldering by dipping or by solder wave . . 9

Manual soldering . . . . . . . . . . . . . . . . . . . 9

Package related soldering information . . . 9

Revision history . . . . . . . . . . . . . . . . . . . . 9

Data sheet status. . . . . . . . . . . . . . . . . . . 10

Definitions . . . . . . . . . . . . . . . . . . . . . . . . 10

Disclaimers . . . . . . . . . . . . . . . . . . . . . . . 10

TDA8943SF

7 W mono BTL audio amplifier

© Philips Electronics N.V. 1999.

Printed in The Netherlands

All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.

The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights.

Date of release: 14 April 1999 Document order number: 9397 750 04877