datasheet for PA162DK by Apex Microtechnology

datasheet for PA162DK by Apex Microtechnology
PA162
PA162
PA162
Power Operational Amplifiers
DESCRIPTION
FEATURES
LOW COST
WIDE BANDWIDTH - 1.1 Mhz
HIGH OUTPUT CURRENT - 1.5A PER AMPLIFIER
WIDE COMMON MODE RANGE Includes negative
supply
WIDE SUPPLY VOLTAGE RANGE Single supply:
5V to 40V Split supplies: ± 2.5V to ± 20V
LOW QUIESCENT CURRENT
VERY LOW DISTORTION
APPLICATIONS
HALF AND FULL BRIDGE MOTOR DRIVERS
AUDIO POWER AMPLIFIER
Stereo - 11.3W RMS per ampliier
Bridge - 22.6W RMS per two ampliiers
Two Bridges - 45.2W RMS per package
3 PHASE MOTOR DRIVER
3 Channels - 33.9W RMS per package
IDEAL FOR SINGLE SUPPLY SYSTEMS
5V - Peripherals
12V - Automotive
28V - Avionic
PACKAGING OPTIONS
20-Pin PSOP, JEDEC MO-166-AB (PA162DK)
The ampliier design is a dual power op amp on a
single monolithic die. The quad output PA162 combines two dual op amp die in a single PSOP package. This approach provides a cost-effective solution to applications where multiple ampliiers are
required or a bridge coniguration is needed. Four
independent ampliiers coupled with low quiescent
current and very low THD makes this an ideal lowdistortion 4-channel audio ampliier for applications
such as laptops and computer speakers.
The quad output PA162DK is available in a surface
mount 20-pin PSOP, JEDEC MO-166-AB package.
Built-in thermal shutdown allows the devices to selfprotect against thermal overloads. Care must be exercised to observe the Safe Operating Area (SOA)
curve and proper heatsinking will ensure maximum
reliability.
The wide common mode input range includes the
negative rail, facilitating single supply applications.
This makes it possible to have a ground-based input
driving a single supply ampliier with ground acting
as the second or bottom supply of the ampliier.
+Vs
I BIAS
MONITOR
+IN
-IN
OUT
THERMAL
PROTECT
-Vs
FIGURE 1. Equivalent schematic (one channel)
www.apexanalog.com
PA162U
Copyright © Apex Microtechnology, Inc. 2012
(All Rights Reserved)
OCT2012
1
PA162UREVD
PA162
1.CHARACTERISTICSANDSPECIFICATIONS
ABSOLUTEMAXIMUMRATINGS
Parameter
Symbol
SUPPLY VOLTAGE, total
OUTPUT CURRENT
Min
Max
Units
5
40
V
15
W
24
W
SOA
POWER DISSIPATION, internal (1 ampliier)
POWER DISSIPATION, internal (2 ampliiers)
5
POWER DISSIPATION, internal (3 ampliiers)
5
36
W
POWER DISSIPATION, internal (4 ampliiers)5
45
W
INPUT VOLTAGE, differential
-Vs
+Vs
INPUT VOLTAGE, common mode
+Vs
-Vs-.5V
JUNCTION TEMPERATURE, max2
150
°C
TEMPERATURE, pin solder - 10 secs max.
220
°C
TEMP RANGE STORAGE
-55
150
°C
OPERATING TEMP RANGE, case2
-40
125
°C
SPECIFICATIONS(PERAMPLIFIER)
Parameter
TestConditions2,3
Min
Typ
Max
1
15
Units
INPUT
OFFSET VOLTAGE, initial
OFFSET VOLTAGE, vs. temperature
Full temp range
20
BIAS CURRENT, initial
100
COMMON MODE RANGE
Full temp range
500
-Vs
COMMON MODE REJECTION, DC
mV
µV/°C
+Vs
nA
V
60
90
dB
POWER SUPPLY REJECTION
Full temp range
60
90
dB
CHANNEL SEPARATION
IOUT = 500mA, ƒ = 1kHz
50
68
dB
INPUT NOISE VOLTAGE
RS = 100 , ƒ = 1 to 100kHz
22
nV/√Hz
100
dB
GAIN
OPEN LOOP GAIN
VO = ±10V, RL = 2.0K
89
GAIN BANDWIDTH PRODUCT
ƒ = 100kHz, CL = 100pF, RL = 2.0K
PHASE MARGIN
Full temp range
65
°C
POWER BANDWIDTH
VO(P-P) = 28V
13.6
kHz
0.9
1.4
MHz
OUTPUT
CURRENT, peak
CURRENT, continuous
SLEW RATE
1.5
A
1
A
1.0
1.4
V/µS
VOLTAGE SWING
Full temp range, IO = 100mA
|Vs| -1.1
|Vs| -0.8
V
VOLTAGE SWING
Full temp range, IO = 1A
|Vs| -1.8
|Vs| -1.4
V
HARMONIC DISTORTION
AV = 1, RL = 50 ,
VO = .5VRMS, ƒ = 1kHz
.02
%
2
PA162U
PA162
Parameter
TestConditions2,3
Min
Typ
Max
Units
5
30
40
V
CURRENT, quiescent +Vs (A/B)
8
10
mA
CURRENT, quiescent +Vs (C/D)
8
10
mA
CURRENT, quiescent total
16
20
mA
POWERSUPPLY
VOLTAGE, Vss4
THERMAL
RESISTANCE, junction to case
DC, 1 ampliier
7.16
7.87
°C/W
5
4.69
5.16
°C/W
DC, 3 ampliiers5
3.08
3.39
°C/W
DC, 4 ampliiers
2.51
2.77
°C/W
AC, 1 ampliier
5.37
5.90
°C/W
AC, 2 ampliiers5
3.52
3.87
°C/W
AC, 3 ampliiers
5
2.31
2.54
°C/W
AC, 4 ampliiers5
1.89
2.07
°C/W
DC, 2 ampliiers
5
RESISTANCE, junction to air
1
20
-
A
B
-
NC
-IN(A)
+IN(A)
+IN(B)
-IN(B)
-IN(C)
+IN(C)
+IN(D)
-IN(D)
NC
°C/W
1. (All Min/Max characteristics and speciications are guaranteed over the Speciied Operating Conditions. Typical performance characteristics and speciications are derived from measurements taken
at typical supply voltages and TC = 25°C).
2. Long term operation at the maximum junction temperature will result in reduced product life. Derate
power dissipation to achieve high MTTF.
3. Unless otherwise noted, the following conditions apply: ±VS = ±15V, T C =25°C.
4. +VS and -VS denote the positive and negative rail respectively. VSS denotes total rail-to-rail supply.
5. Rating applies when power dissipation is equal in each of the ampliiers. Power and thermal ratings
are based on two separate dual monolithic power op-amps on one integrated copper heatslug.
Ampliiers A and B are combined on one monolithic die while ampliiers C and D are on the other.
6. If -VS is disconnected before +VS, a diode between -Vs and ground is recommended to avoid damage.
7. Rating applies when the heatslug of the DK package is soldered to a minimum of 1 square inch foil
area of a printed circuit board.
+
+
NOTES:
25
7
-
C
+
+
D
-
10
11
-VS
OUT(A)
+VS(A/B)
OUT(B)
-VS
-VS
OUT(C)
+VS(C/D)
OUT(D)
-VS
20-pinPSOP
PACKAGESTYLEDK
FIGURE2.EXTERNALCONNECTIONS.
PA162U
3
PA162
TYPICALPERFORMANCEGRAPHS
12
40
8
0
4
-40
-80
2
10
8
4
6
AVERAGE QUIESCENT CURRENT, I Q (mA)
0
PHASE MARGIN vs. OUTPUT LOAD CAPACITANCE
(mV)
80
OS
16
75
AVERAGE OFFSET VOLTAGE, V
120
CASE TEMPERATURE, T C (°C)
20
AVERAGE BIAS CURRENT, I B (mA)
TOTAL SUPPLY VOLTAGE, V
VOS
BIAS CURRENT
S
(V)
QUIESCENT CURRENT
65
55
45
0
40
120
-40
80
CASE TEMPERATURE, T C (°C)
3
2
1
0
0
40
80
120
-40
CASE TEMPERATURE, T C (°C)
VOLTAGE GAIN & PHASE vs. FREQUENCY
OUTPUT VOLTAGE SWING
55
45
35
100
40
20
110
0
120
-20
25
20
04
08
12
16
00
OUTPUT LOAD CAPACITANCE, C L (nF)
100
1K
10
FREQUENCY, ƒ (KHz)
1
PULSE RESPONSE
1.2
1
0.8
0.6
0.4
0.2
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
OUTPUT CURRENT, I O (A)
(V)
O
8
4
OUTPUT VOLTAGE, V
+VS = +15V
AV = +1
VIN = 10Vp
6
O
(V)
1.6
1.4
10
8
OUTPUT VOLTAGE, V
130
10K
1.8
PULSE RESPONSE
10
2
0
-2
-VS = -15V
RL = 20Ω
fIN = 20kHz
-4
-6
2
0
-2
-4
-6
-8
-8
-10
10
20
30 40 50
TIME, t (µs)
60
+VS = +15V
AV = +1
VIN = 10Vp
6
4
-10
0
0
70
-VS = -15V
fIN = 1kHz
200 400 600 800 1000 1200 1400
TIME, t (µs)
TYPICALAPPLICATION
R3
R2
R1 and R2 set up Ampliier A as non-inverting. Ampliier B is set up as a unity gain inverter driven from the
output of Ampliier A. Note that Ampliier B inverts the
signals about the reference node, which is set at midsupply by R5 and R6. When the command input is
midrange, so is the output of Ampliier A. Since this is
also equivalent to the reference node voltage, the output of Ampliier B is the same resulting in 0V across
the motor. Inputs more positive than 5V result in motor
current low from left to right (see Figure 3). Inputs less
than 5V drive the motor in the opposite direction.
4
PHASE, Ф (°)
90
60
GAIN, A (dB)
PHASE MARGIN, Ф (°)
65
VOLTAGE DROP FROM SUPPLY, (V)
2
R4
R1
INPUT
0-10V
_
A
1/4 PA162
_
B
1/4 PA162
M
+
+28V
R5
+
R6
FIGURE3.BI-DIRECTIONALSPEEDCONTROL
FROMASINGLESUPPLY.
PA162U
PA162
TYPICALAPPLICATION(CONT)
The ampliiers are especially well-suited for applications
such as this. The extended common mode range allows
command inputs as low as 0V. The output swing lets
it drive within 2V of the supply at an output of 1A. This
means that a command input that ranges from 0 to 10V
will drive a 24V motor from full scale CCW to full scale
CW at ±1A.
-Vs (pins 11, 15, 16 and 20) must be tied to the heatslug
externally on the PCB. To ease metal routing on the PCB,
run a direct trace from the -Vs pin to the center heat slug.
The PA162 can be used in a three ampliier coniguration
for a three phase inverter or motor as shown in Figure 4.
N
o
S
PA162
Quad
GENERAL
Using 3 amplifiers from PA162
as 3 phase motor driver.
Please read Application Note 1 "General Operating Considerations" which covers stability, supplies, heatsinking, FIGURE4.3PhaseInverter
mounting, SOA interpretation, and speciication interpretation. Visit www.apexanalog.com for design tools that help automate tasks such as calculations for stability, internal
power dissipation, heatsink selection; Apex Microtechnology's complete Application Notes library; Technical Seminar Workbook; and Evaluation Kits.
STABILITYCONSIDERATIONS
SAFEOPERATINGAREA(SOA)
The SOA curves combine the effect of all limits for this
power op amp. For a given application, the direction and
magnitude of the output current should be calculated or
measured and checked against the SOA curves. This is
simple for resistive loads but more complex for reactive
and EMF generating loads. The following guidelines may
save extensive analytical efforts.
OUTPUT CURRENT FROM +VS OR -VS, (A)
All monolithic power op amps use output stage topologies that present special stability problems. This is primarily due to non-complementary (both devices are NPN)
output stages with a mismatch in gain and phase response for different polarities of
output current. It is dificult for the op amp manufacturer to optimize compensation
for all operating conditions. For applications with load current exceeding 300mA,
oscillation may appear. The oscillation may occur only with the output voltage swing
at the negative or positive half cycle. Under most operating and load conditions
acceptable stability can be achieved by providing a series RC snubber network
connected from the output to ground (see Figure 5). The recommended component
values of the network are, RSN = 10 and CSN = 0.01µF. Please refer to Application
Note 1 for further details.
10
–
C SN
0.01µF
R SN
10Ω
FIGURE5.R-CSnubber
SOA
DC, TC = 25°C
DC, TC = 85°C
1
0.1
PA162U
+
4 AMPLIFIERS LOADED
3 AMPLIFIERS LOADED
2 AMPLIFIERS LOADED
1 AMPLIFIER LOADED
1
10
50
SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE, VS - VO (V)
5
PA162
THERMALCONSIDERATIONS
INTERNAL POWER DISSIPATION, P (W)
POWER DERATING
50
The PA162DK has a large exposed integrated copper heat(A
+B
slug to which the monolithic is directly attached. The solder
+C
+D
connection of the heatslug to a minimum of 1 square inch
)A
(
A
40
+B
MP
+C
LIF
foil area of the printed circuit board will result in thermal per)A
IE
MP
RS
LIF
formance of 25°C/W junction to air rating of the PA162DK.
LO
IER
30
AD
S
Solder connection to an area of 1 to 2 square inches of foil
LO
ED
(A+
A
D
B
is required for minimal power applications.
ED
) AM
PLI
FIE
Where the PA162DK is used in higher power applications, it
RS
20
LOA
(
A
)
DED
A
is necessary to use surface mount techniques of heatsinkMPLIF
IER L
O
A
ing. Surface mount techniques include the use of a surface
DED
10
mount fan in combination with a surface mount heatsink on
the backside of the FR4/ PC board with through hole thermal vias. Other highly thermal conductive substrate board
0
125
25
75
100
0
50
materials are available for maximum heat sinking.
JUNCTION
TEMPERATURE,
T
(°C)
J
The Power Derating graph assumes that the power dissipation is equal in each of the ampliiers. Power and thermal
ratings are based on two separate dual monolithic power op amps on one integrated copper heat slug. Amps A and
B are combined on one monolithic die while amps C and D are combined on the other. This multi chip coniguration provides superior thermal performance by isolating each of the dual ampliiers. When loading either of the dual
ampliiers it is possible to achieve better thermal performance by loading any combination of ampliiers (A or B) +
(C or D).
MOUNTINGPRECAUTIONS
1. Always use a heat sink. Even unloaded the PA162DK can dissipate up to .8 watts.
2. Avoid bending the leads. Such action can lead to internal damage.
NEEDTECHNICALHELP?CONTACTAPEXSUPPORT!
For all Apex Microtechnology product questions and inquiries, call toll free 800-546-2739 in North America.
For inquiries via email, please contact [email protected]
International customers can also request support by contacting their local Apex Microtechnology Sales Representative.
To ind the one nearest to you, go to www.apexanalog.com
IMPORTANT NOTICE
Apex Microtechnology, Inc. has made every effort to insure the accuracy of the content contained in this document. However, the information is subject to change
without notice and is provided "AS IS" without warranty of any kind (expressed or implied). Apex Microtechnology reserves the right to make changes without further
notice to any speciications or products mentioned herein to improve reliability. This document is the property of Apex Microtechnology and by furnishing this information, Apex Microtechnology grants no license, expressed or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual
property rights. Apex Microtechnology owns the copyrights associated with the information contained herein and gives consent for copies to be made of the information only for use within your organization with respect to Apex Microtechnology integrated circuits or other products of Apex Microtechnology. This consent does not
extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale.
APEX MICROTECHNOLOGY PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN PRODUCTS USED FOR
LIFE SUPPORT, AUTOMOTIVE SAFETY, SECURITY DEVICES, OR OTHER CRITICAL APPLICATIONS. PRODUCTS IN SUCH APPLICATIONS ARE UNDERSTOOD TO BE FULLY AT THE CUSTOMER OR THE CUSTOMER’S RISK.
Apex Microtechnology, Apex and Apex Precision Power are trademarks of Apex Microtechnolgy, Inc. All other corporate names noted herein may be trademarks
of their respective holders.
www.apexanalog.com
6
Copyright © Apex Microtechnology, Inc. 2012
(All Rights Reserved) OCT2012
PA162U
PA162UREVD
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