PA13, PA13A
PA13 • PA13A
PA13 • PA13A
DESCRIPTION
The PA13 is a state of the art high voltage, very high
output current operational amplifier designed to drive
resistive, inductive and capacitive loads. For optimum
linearity, especially at low levels, the output stage is
biased for class A/B operation using a thermistor com-
pensated base-emitter voltage multiplier circuit. The
safe operating area (SOA) can be observed for all op-
erating conditions by selection of user programmable
current limiting resistors. For continuous operation un-
der load, a heatsink of proper rating is recommended.
The PA13 is not recommended for gains below –3 (in-
verting) or +4 (non-inverting).
This hybrid integrated circuit utilizes thick film (cermet)
resistors, ceramic capacitors and semiconductor chips
to maximize reliability, minimize size and give top per-
formance. Ultrasonically bonded aluminum wires pro-
vide reliable interconnections at all operating temper-
atures. The 12-pin power SIP package is electrically
isolated.
Power Operational Amplifier
FEATURES
♦
♦
♦
♦
♦
LOW THERMAL RESISTANCE — 1.1°C/W
CURRENT FOLDOVER PROTECTION
EXCELLENT LINEARITY — Class A/B Output
WIDE SUPPLY RANGE — ±10V to ±45V
HIGH OUTPUT CURRENT — Up to ±15A Peak
APPLICATIONS
♦ MOTOR, VALVE AND ACTUATOR CONTROL
♦ MAGNETIC DEFLECTION CIRCUITS
UP TO 10A
♦ POWER TRANSDUCERS UP TO 100kHz
♦ TEMPERATURE CONTROL UP TO 360W
♦ PROGRAMMABLE POWER SUPPLIES
UP TO 90V
♦ AUDIO AMPLIFIERS UP TO 120W RMS
EQUIVALENT SCHEMATIC
12
11
D1
Q1
Q3
3
4
7
2
A1
1
5
6
C1
Q6A
8
Q6B
Q2A
Q2B
10
9
Q4
Q5
EXTERNAL CONNECTIONS
1
2
3
4
F.O.
–R
CL
–IN
+IN
+R
CL
OUTPUT
–V
S
–C
L
+C
L
+V
S
5
6
7
8
9
10
11
12
Formed leads avaliable
See package style EE
12-pin SIP
PACKAGE
STYLE DP
PA13U
www.cirrus.com
Copyright © Cirrus Logic, Inc. 2011
(All Rights Reserved)
OCT 2011
1
APEX − PA13REVS
PA13 • PA13A
1. CHARACTERISTICS AND SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS –
PA13/PA13A
Parameter
SUPPLY VOLTAGE, +V
S
to -V
S
OUTPUT CURRENT, within SOA
POWER DISSIPATION, internal
INPUT VOLTAGE, differential
INPUT VOLTAGE, common mode
TEMPERATURE, pin solder, 10s max.
TEMPERATURE, junction
TEMPERATURE RANGE, storage
OPERATING TEMPERATURE RANGE, case
(Note 3)
−55
−25
-37
-V
S
Symbol
Min
Max
100
15
135
37
V
S
260
175
125
85
Units
V
A
W
V
V
°C
°C
°C
°C
CAUTION
The exposed substrate contains beryllia (BeO). Do not crush, machine, or subject to temperatures
in excess of 850°C to avoid generating toxic fumes.
PA13
Min
Typ
±2
Full temp range
±10
±30
±20
±12
Full temp range
±50
±10
±12
Full temp range
±50
200
3
Full temp range
±V
S
- 5
74
±V
S
- 3
100
*
*
±30
±30
±500
SPECIFICATIONS
Parameter
INPUT
OFFSET VOLTAGE, initial
OFFSET VOLTAGE vs. temp
OFFSET VOLTAGE vs. supply
OFFSET VOLTAGE vs. power
BIAS CURRENT, initial
BIAS CURRENT, vs. temp
BIAS CURRENT, vs. supply
OFFSET CURRENT, initial
OFFSET CURRENT, vs. temp
INPUT IMPEDANCE, DC
INPUT CAPACITANCE
COMMON MODE VOLTAGE
RANGE
(Note 4)
±6
±65
±200
±1
*
*
*
±10
*
*
±5
*
*
*
*
*
±10
±20
*
±4
±40
*
mV
µV/°C
µV/V
µV/W
nA
pA/°C
pA/V
nA
pA/°C
MΩ
pF
V
dB
Test Condi-
tions
2,5
PA13A
Max
Min
Typ
Max
Units
COMMON MODE REJECTION, Full temp range,
DC
V
CM
= ±V
S
– 6V
GAIN
OPEN LOOP GAIN @ 10Hz
OPEN LOOP GAIN @ 10Hz
1KΩ load
Full temp range,
8Ω load
110
96
108
4
13
20
20
*
*
*
*
*
*
*
dB
dB
MHz
kHz
°
GAIN BANDWIDTH PRODUCT 8Ω load
@ 1MHz
POWER BANDWIDTH
PHASE MARGIN, A
V
= +4
8Ω load
Full temp range,
8Ω load
2
PA13U
PA13 • PA13A
Test Condi-
tions
2,5
PA13 = 10A,
PA13A = 15A
I
O
= 5A
Full temp range,
I
O
= 80mA
2V step
2.5
Full temp range,
A
V
= 4
Full temp range,
A
V
> 10
Full temp range
±10
±40
25
T
C
= –55 to
+125°C, F >
60Hz
T
C
= –55 to
+125°C
T
C
= –55 to
+125°C
-25
0.6
PA13
Min
±V
S
- 6
±V
S
- 5
±V
S
- 5
10
2
4
1.5
SOA
*
PA13A
Max
Min
*
*
*
15
*
*
*
*
Parameter
OUTPUT
VOLTAGE SWING
VOLTAGE SWING
VOLTAGE SWING
CURRENT, peak
SETTLING TIME to 0.1%
SLEW RATE
CAPACITIVE LOAD
CAPACITIVE LOAD
POWER SUPPLY
VOLTAGE
CURRENT, quiescent
THERMAL
RESISTANCE, AC,
junction to case
(Note 5)
RESISTANCE, DC,
junction to case
RESISTANCE, DC,
junction to air
(Note 4)
(Note 4)
(Note 4)
Typ
Typ
Max
Units
V
V
V
A
µS
V/µS
nF
±45
50
0.7
*
*
*
*
*
*
*
V
mA
°C/W
0.9
30
1.1
*
*
*
°C/W
°C/W
TEMPERATURE RANGE, case Meets full range
specification
+85
*
*
°C
NOTES: 1. (All Min/Max characteristics and specifications are guaranteed over the Specified Operating Condi-
tions. Typical performance characteristics and specifications are derived from measurements taken at
typical supply voltages and T
C
= 25°C).
2. Long term operation at the maximum junction temperature will result in reduced product life. Derate
power dissipation to achieve high MTTF.
* The specification of PA13A is identical to the specification for PA13 in the applicable column to the left
3. The power supply voltage for all tests is ±40, unless otherwise noted as a test condition.
4. +V
S
and –V
S
denote the positive and negative supply rail respectively. Total V
S
is measured from +V
S
to –V
S
.
5. Rating applies if the output current alternates between both output transistors at a rate faster than
60Hz.
6. Full temperature range specifications are guaranteed but not 100% tested.
PA13U
3
PA13 • PA13A
POWER RATING
TYPICAL APPLICATION
+73V
47µF
.1µF
Not all vendors use the same method to rate the power han-
dling capability of a Power Op Amp. Apex Precision Power
rates the internal dissipation, which is consistent with rating
methods used by transistor manufacturers and gives conser-
vative results. Rating delivered power is highly application
dependent and therefore can be misleading. For example,
the 135W internal dissipation rating of the PA13 could be ex-
pressed as an output rating of 260W for audio (sine wave) or
as 440W if using a single ended DC load. Please note that all
vendors rate maximum power using an infinite heatsink.
11,12
9,10 .2Ω
2
2.5V
P-P
1
PA13
7,8
5,6
47µF
–22V
R
CL+
3
R
CL–
.2Ω
.1µF
7.8mH
4Ω
5Ap-p
R
D
2K
C
F
50pF
R
F
1K
THERMAL STABILITY
Apex Precision Power has eliminated the tendency of class
A/B output stages toward thermal runaway and thus has
vastly increased amplifier reliability. This feature, not found in
most other Power Op Amps, was pioneered by Apex Preci-
sion Power in 1981 using thermistors which assure a negative
temperature coefficient in the quiescent current. The reliability
benefits of this added circuitry far outweigh the slight increase
in component count.
L* 1
YOKE DRIVER: –V =
t
HIGH CURRENT ASYMMETRICAL SUPPLY
R
S
.5Ω
TYPICAL PERFORMANCE GRAPHS
INTERNAL POWER DISSIPATION, P (W)
120
100
80
60
40
20
0
0
20 40 60 80 100 120 140
CASE TEMPERATURE, T
C
(°C)
PA13
NORMALIZED BIAS CURRENT, I
B
(X)
140
POWER DERATING
2.5
2.2
BIAS CURRENT
17.5
CURRENT LIMIT, I
LIM
(A)
CURRENT LIMIT
15.0
12.5
10.0
7.5
5.0
2.5
V
O
= –24
V
1.9
1.6
1.3
1.0
.7
.4
–50 –25 0
25 50 75 100 125
CASE TEMPERATURE, T
C
(°C)
0
–30
R
CL
= .06Ω, R
FO
=
∞
R
CL
= .18Ω, R
FO
= 0
V
O
=0
V
O
=
24V
V
O
= 0
0
–50 –25 0
25 50 75 100 125
CASE TEMPERATURE, T
C
(°C)
120
OPEN LOOP GAIN, A (dB)
SMALL SIGNAL RESPONSE
PHASE RESPONSE
100
OUTPUT VOLTAGE, V
O
(V
P-P
)
POWER RESPONSE
68
46
32
22
15
10
6.8
4.6
10K
20K 30K
50K 70K .1M
FREQUENCY, F (Hz)
100
80
60
40
20
0
–20
1
10
100 1K 10K .1M 1M 10M
FREQUENCY, F (Hz)
PHASE, Ф (°)
| +V
S
| + | –V
S
| = 100V
–60
–90
–120
–150
–180
–210
1
10
100 1K 10K .1M 1M 10M
FREQUENCY, F (Hz)
| +V
S
| – | –V
S
| = 80V
| +V
S
| + | –V
S
| = 30V
REJECTION, CMR (dB)
COMMON MODE REJECTION
120
OLTAGE, V
O
(V)
100
80
60
6
4
2
0
V
IN
= 5V, t
r
= 100ns
OLTAGE, V
N
(nV/√Hz)
8
PULSE RESPONSE
100
70
50
40
30
INPUT NOISE
4
PA13U
OPEN LOOP GAIN
PHASE, Ф (°
60
40
20
0
–20
1
10
100 1K 10K .1M 1M 10M
FREQUENCY, F (Hz)
–90
–120
–150
–180
–210
1
10
100 1K 10K .1M 1M 10M
FREQUENCY, F (Hz)
OUTPUT VOLTAGE,
32
22
15
10
6.8
4.6
10K
| +V
S
| – | –V
S
| = 80V
| +V
S
| + | –V
S
| = 30V
PA13 • PA13A
20K 30K
50K 70K .1M
FREQUENCY, F (Hz)
COMMON MODE REJECTION, CMR (dB)
COMMON MODE REJECTION
120
OUTPUT VOLTAGE, V
O
(V)
100
80
60
40
20
0
1
10
100 1K 10K .1M
FREQUENCY, F (Hz)
1M
6
4
2
0
-2
-4
-6
-8
0
V
IN
= 5V, t
r
= 100ns
INPUT NOISE VOLTAGE, V
N
(nV/√Hz)
8
PULSE RESPONSE
100
70
50
40
30
20
INPUT NOISE
2
4
6
8
TIME, t (µs)
10
12
10
10
1K
100
10K
FREQUENCY, F (Hz)
.1M
1
DISTORTION, (%)
NORMALIZED, I
Q
(X)
A
V
=10
V
S
= 37V
R
L
= 4Ω
W
1.4
1.2
1.0
.8
.6
.1M
.4
40
50
60
70
80
90 100
TOTAL SUPPLY VOLTAGE, V
S
(V)
T
C
= –
25°C
VOLTAGE DROP FROM SUPPLY (V)
3
HARMONIC DISTORTION
1.6
QUIESCENT CURRENT
6
5
4
3
OUTPUT VOLTAGE SWING
.3
.1
.03
.01
=
P
O
0m
10
P
O
W
=4
–V
O
°C
T
C
= 25
T
C
= 85
°C
.003
100
P
O
=
12
0W
5°C
T
C
= 12
+V
O
2
1
300
1K
3K 10K 30K
FREQUENCY, F (Hz)
0
3
6
9
12
OUTPUT CURRENT, I
O
(A)
15
GENERAL
Please read Application Note 1 "General Operating Considerations" which covers stability, supplies, heat sinking,
mounting, current limit, SOA interpretation, and specification interpretation. Visit www.Cirrus.com for design tools
that help automate tasks such as calculations for stability, internal power dissipation, current limit; heat sink selec-
tion; Apex Precision Power’s complete Application Notes library; Technical Seminar Workbook; and Evaluation Kits.
SAFE OPERATING AREA (SOA)
The output stage of most power amplifiers has three distinct
limitations:
1. The current handling capability of the transistor geometry
and the wire bonds.
2. The second breakdown effect which occurs whenever the
simultaneous collector current and collector-emitter volt-
age exceeds specified limits.
3. The junction temperature of the output transistors.
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. However, the following guidelines may save extensive
analytical efforts.
OUTPUT CURRENT FROM +V
S
OR -V
S
(A)
15
10
6.0
4.0
3.0
2.0
1.0
.6
TH
ER
MA
T
T
C
C
SOA
ms
0.5
s
t =
1m
s
t=
SE
CO
t=
=2
=8
5°C
5m
ND
5°C
BR
K
EA
L
.4
10
20
30
40 50
70
90
SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE, V
S
- V
O
(V)
DO
W
N
ste
y
ad
sta
te
PA13U
5
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