APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
FEATURES
HIGH POWER BANDWIDTH -- 350kHz
HIGH SLEW RATE -- 20V/
s
FAST SETTLING TIME -- 600ns
LOW CROSSOVER DISTORTION -- Class A/B
LOW INTERNAL LOSSES -- 1.2V at 2A
HIGH OUTPUT CURRENT --
5A PEAK
LOW INPUT BIAS CURRENT -- FET Input
ISOLATED CASE -- 300 VDC
APPLICATIONS
MOTOR, VALVE AND ACTUATOR CONTROL
MAGNETIC DEFLECTION CIRCUITS UP TO 5A
POWER TRANSDUCERS UP TO 350 kHz
AUDIO AMPLIFIERS UP TO 30W RMS
DESCRIPTION
The PA02 and PA02A are wideband, high output current
operational amplifiers designed to drive resistive, inductive
and capacitive loads. Their complementary "collector output"
stage can swing close to the supply rails and is protected
against inductive kickback. For optimum linearity, the output
stage is biased for class A/B operation. The safe operating
area (SOA) can be observed for all operating conditions by
selection of user programmable, current limiting resistors
(down to 10mA). Both amplifiers are internally compensated
but are not recommended for use as unity gain followers. For
continuous operation under load, mounting on a heatsink of
proper rating is recommended.
These hybrid integrated circuits utilize thick film (cermet)
resistors, ceramic capacitors and semiconductor chips to
maximize reliability, minimize size and give top performance.
Ultrasonically bonded aluminum wires provide reliable inter-
connections at all operating temperatures. The 8-pin TO-3
package is hermetically sealed and electrically isolated.
Isolation washers are not recommended. The use of com-
pressible thermal washers and/or improper mounting torque
will void the product warranty. Please see "General Operat-
ing Considerations".
EQUIVALENT SCHEMATIC
TYPICAL APPLICATION
Vehicular Sound System Power Stage
When system voltages are low and power is at a premium,
the PA02 is a natural choice. The circuit above utilizes not only
the feature of low internal loss of the PA02, but also its very low
distortion level to implement a crystal clear audio amplifier
suitable even for airborne applications. This circuit uses AC
coupling of both the input signal and the gain circuit to render
DC voltage across the speaker insignificant. The resistor and
capacitor across the inputs form a stability enhancement
network. The 0.27 ohm current limit resistors provide protec-
tion in the event of an output short circuit.
EXTERNAL CONNECTIONS
16K
100K
R
CL+
R
CL
.27
.27
3.2
16W
12
+12
.47F
.47F
16K
.001F
PA02
IN
1K
LOW INTERNAL LOSS MAXIMIZES EFFICIENCY
R
CL+
R
CL
TOP VIEW
1
2
3
4
5
6
7
8
CL
V
S
+IN
IN
OUT
OUT
+V
S
CL+
2
6
5
7
1
3
4
8
R2
R3
R1
R5
R4
R8
R9
R10
R11
R12
R13
R14
R15
R6
R7
Q1
Q8
Q5
Q4
Q3
Q6
Q2
Q7
A1
D1
D2
H T T P : / / W W W . A P E X M I C R O T E C H . C O M ( 8 0 0 ) 5 4 6 - A P E X ( 8 0 0 ) 5 4 6 - 2 7 3 9
M I C R O T E C H N O L O G Y
POWER OPERATIONAL AMPLIFIERS
PA02 PA02A
APEX MICROTECHNOLOGY CORPORATION 5980 NORTH SHANNON ROAD TUCSON, ARIZONA 85741 USA APPLICATIONS HOTLINE: 1 (800) 546-2739
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, +V
S
to V
S
38V
OUTPUT CURRENT, within SOA
5A
POWER DISSIPATION, internal
1
48W
INPUT VOLTAGE, differential
V
S
5V
INPUT VOLTAGE, common mode
V
S
2V
TEMPERATURE, pin solder - 10s
300
C
TEMPERATURE, junction
1
150
C
TEMPERATURE RANGE, storage
65 to +150
C
OPERATING TEMPERATURE RANGE, case 55 to +125
C
PA02 PA02A
The internal substrate contains beryllia (BeO). Do not break the seal. If accidentally broken, do not crush, machine, or
subject to temperatures in excess of 850
C to avoid generating toxic fumes.
CAUTION
SPECIFICATIONS
PARAMETER
TEST CONDITIONS
2, 6
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
INPUT
OFFSET VOLTAGE, initial
T
C
= 25
C
5
10
1
3
mV
OFFSET VOLTAGE, vs. temperature
Full temperature range
10
50
*
25
V/
C
OFFSET VOLTAGE, vs. supply
T
C
= 25
C
10
*
V/V
OFFSET VOLTAGE, vs. power
T
C
= 25
C
6
*
V/W
BIAS CURRENT, initial
T
C
= 25
C
50
200
25
100
pA
BIAS CURRENT, vs. temperature
T
C
= 85
C
200
*
pA/
C
BIAS CURRENT, vs. supply
T
C
= 25
C
.01
*
pA/V
OFFSET CURRENT, initial
T
C
= 25
C
25
100
15
50
pA
OFFSET CURRENT, vs. temperature
T
C
= 85
C
100
*
pA/
C
INPUT IMPEDANCE, DC
T
C
= 25
C
1000
*
G
INPUT CAPACITANCE
T
C
= 25
C
3
*
pF
COMMON MODE VOLT. RANGE
5
, Pos. Full temperature range
+V
S
6
+V
S
3
*
*
V
COMMON MODE VOLT. RANGE
5
, Neg. Full temperature range
V
S
+6
V
S
+5
*
*
V
COMMON MODE REJECTION, DC
Full temperature range
70
100
*
*
dB
GAIN
OPEN LOOP GAIN at 10Hz
T
C
= 25
C, 1k
load
103
*
dB
OPEN LOOP GAIN at 10Hz
Full temp. range, 10k
load
86
100
*
*
dB
GAIN BANDWIDTH PRODUCT at 1MHz T
C
= 25
C, 10
load
4.5
*
MHz
POWER BANDWIDTH
T
C
= 25
C, 10
load
350
*
kHz
PHASE MARGIN
Full temp. range, 10
load
30
*
OUTPUT
VOLTAGE SWING
3
T
C
= 25
C, I
O
= 5A, R
CL
= .08
V
S
4
V
S
3
*
*
V
VOLTAGE SWING
3
Full temp. range, I
O
= 2A
V
S
2
V
S
1.2
*
*
V
CURRENT, peak
T
C
= 25
C
5
*
A
SETTLING TIME to .1%
T
C
= 25
C, 2V step
.6
*
s
SLEW RATE
T
C
= 25
C
13
20
*
*
V/
s
CAPACITIVE LOAD
Full temp. range, A
V
> 10
SOA
*
HARMONIC DISTORTION
P
O
= .5W, F = 1kHz, R
L
= 10
.004
*
%
SMALL SIGNAL rise/fall time
R
L
= 10
, A
V
= 1
100
*
ns
SMALL SIGNAL overshoot
R
L
= 10
, A
V
= 1
10
*
%
POWER SUPPLY
VOLTAGE
Full temperature range
7
15
19
*
*
*
V
CURRENT, quiescent
T
C
= 25
C
27
40
*
*
mA
THERMAL
RESISTANCE, AC junction to case
4
F > 60Hz
1.9
2.1
*
*
C/W
RESISTANCE, DC junction to case
F < 60Hz
2.4
2.6
*
*
C/W
RESISTANCE, junction to air
30
*
C/W
TEMPERATURE RANGE, case
Meets full range specifications
25
+85
55
+125
C
PA02A
PA02
NOTES:
*
The specification of PA02A is identical to the specification for PA02 in applicable column to the left.
1.
Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation
to achieve high MTTF.
2.
The power supply voltage for all specifications is the TYP rating unless otherwise noted as a test condition.
3.
+V
S
and V
S
denote the positive and negative supply rail respectively. Total V
S
is measured from +V
S
to V
S
.
4.
Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz.
5.
Exceeding CMV range can cause the output to latch.
6.
Full temperature specifications are guaranteed but not 100% tested.
APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
TYPICAL PERFORMANCE
GRAPHS
PA02 PA02A
0
25
50
75
100
125
TEMPERATURE, T (C)
0
10
30
50
POWER DERATING
INTERNAL POWER DISSIPATION, P(W)
10
100
10K
.1M
FREQUENCY, F (Hz)
INPUT NOISE VOLTAGE, e
n
(nV/ Hz)
1
100
10M
FREQUENCY, F (Hz)
20
0
60
120
SMALL SIGNAL RESPONSE
OPEN LOOP GAIN, A
OL
(dB)
20
40
80
100
1
100
.1M
10M
210
150
60
0
PHASE RESPONSE
90
30
.1M
.2M
.5M
1M
FREQUENCY, F (Hz)
6
OUTPUT VOLTAGE, V (V )
O
1
3
4
7
OUTPUT CHANGE FROM ZERO, VOLTS
0
2
3
SETTLING TIME
TIME, t (S)
.5
1.5
2.5
25
125
CASE TEMPERATURE, T
C
(C)
1.0
1.1
1.6
QUIESCENT CURRENT
NORMALIZED QUIESCENT CURRENT, I
Q
(X)
1.2
1.5
0
OUTPUT CURRENT, I
O
(A)
OUTPUT VOLTAGE SWING
SATURATION VOLTAGE, V
S
V
O
(V)
25
50
100
CASE TEMPERATURE, T (C)
0
2.5
CURRENT LIMIT
CURRENT LIMIT, I (A)
LIM
2.0
C
2
5
6
1.0
INPUT NOISE
1K
10
15
20
1K
20
POWER RESPONSE
PP
.3M
0
25
50
75
100
1.4
0
25
75
.5
1.0
10
1K 10K .1M 1M
150
40
10
10K
1M
FREQUENCY, F (Hz)
PHASE, ()
1.5
.7M
7.8
10
13
18
23
30
1
1.3
125
3.0
180
120
25
30
35
40
1
2
3
4
5
1.5
2.0
2.5
3.0
3.5
8
1mV NO LOAD
10mV NO LOAD
.5
.9
| +V
S
| + | V
S
| = 36V
| +V
S
| + | V
S
| = 30V
T=T
C
T=T
A
T
C
= 25 to 85C
V
O
R
CL
= 0.3
R
CL
= 0.62
10mV 10 LOAD
10
FREQUENCY, F(Hz)
POWER SUPPLY REJECTION
POWER SUPPLY REJECTION, PSR (dB)
100
1K
10K .1M
1M
10M
0
20
40
60
80
100
120
140
+V
S
V
S
1
10K
FREQUENCY, F (Hz)
COMMON MODE REJECTION
COMMON MODE REJECTION, CMR (dB)
40
80
120
.1M
10
100 1K
1M
20
60
100
10M
15
105
.25
64
256
BIAS CURRENT
4
.06
5
45
65
85
16
NORMALIZED BIAS CURRENT, I (X)
B
1
CASE TEMPERATURE, T (C)
C
25
OPERATING
CONSIDERATIONS
PA02 PA02A
GENERAL
Please read the "General Operating Considerations" section which covers stability,
supplies, heatsinking, mounting, current limit, SOA interpretation, and specification
interpretation. Additional information can be found in the application notes. For
information on the package outline, heatsinks, and mounting hardware, consult the
"Accessory and Package Mechanical Data" section of the handbook.
SAFE OPERATING AREA (SOA)
The SOA curves combine the
effect of all limits for this Power
Op Amp. For a given applica-
tion, the direction and magni-
tude of the output current should
be calculated or measured and
checked against the SOA
curves. This is simple for resis-
tive loads but more complex for
reactive and EMF generating
loads. The following guidelines
may save extensive analytical
efforts:
1. Under transient conditions,
capacitive and dynamic*
loads up to the following maxi-
mums are safe:
CAPACITIVE LOAD
INDUCTIVE LOAD
V
S
I
LIM
= 2A
I
LIM
= 5A
I
LIM
= 2A
I
LIM
= 5A
18V
2mF
0.7mF
.2H
10mH
15V
10mF
2.2mF
.7H
25mH
10V
25mF
10mF
5H
50mH
*
If the inductive load is driven near steady state conditions, allowing the output voltage to drop more than 8V
below the supply rail with I
LIM
= 5A, or 17V below the supply rail with I
LIM
= 2A while the amplifier is current
limiting, the inductor should be capacitively coupled or the current limit must be lowered to meet SOA criteria.
2. The amplifier can handle any EMF generating or reactive load and short circuits to
the supply rails or shorts to common if the current limits are set as follows at
T
C
= 85
C.
SHORT TO
V
S
SHORT TO
V
S
C, L OR EMF LOAD
COMMON
18V
.5A
1.7A
15V
.7A
2.8A
10V
1.6A
4.2A
These simplified limits may be exceeded with further analysis using the operating
conditions for a specific application.
CURRENT LIMIT
Proper operation requires the use of two current limit resistors, connected as shown
in the external connection diagram. The minimum value for R
CL
is 0.12 ohm, however
for optimum reliability it should be set as high as possible. Refer to the "General
Operating Considerations" section of the handbook for current limit adjust details.
DEVICE MOUNTING
The case (mounting flange) is electrically isolated and should be mounted directly to
a heatsink with thermal compound. Screws with Belville spring washers are recom-
mended to maintain positive clamping pressure on heatsink mounting surfaces. Long
periods of thermal cycling can loosen mounting screws and increase thermal resis-
tance.
Since the case is electrically isolated (floating) with respect to the internal circuits it
is recommended to connect it to common or other convenient AC ground potential.
OUTPUT CURRENT FROM +V OR V
S
(A)
2
3
5
7
10
15
20 25 30 40
0.2
0.3
0.5
0.7
1.0
1.5
2.0
3.0
4.0
5.0
SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE V
S
V
O
(V)
THERMAL
SECOND
BREAKDOWN
t = 5ms
T
C
= 125C
T
C
= 25C
T
C
= 70C
T
C
= 100C
STEADY STATE
100
1K
3K
.1M
FREQUENCY, F (Hz)
.001
.1
1
HARMONIC DISTORTION
DISTORTION, THD (%) .003
.03
.3
300
10K 30K
.01
.3M
1
3
4
TIME, t (S)
15
5
15
PULSE RESPONSE
10
0
10
2
5
5
PULSE RESPONSE
OUTPUT VOLTAGE, V
O
(V)
.2
.1
0
.1
.2
.3
.3
10K
FREQUENCY, F (Hz)
LOADING EFFECTS
DELTA GAIN WITH LOAD, A (dB)
1.2
.6
0
.1M
100
1K
1.5
.9
.3
TIME, t (S)
0
.5
1.0
1.5
OUTPUT VOLTAGE, V
O
(V)
0
GAIN = 1
LOAD = 10
P
O
= 5W
P
O
= 50mW
P
O
= .5W
V
IN
= .2V, tr = 50ns
V
IN
= 1V, tr = 100ns
LOAD = 10
I
O
= 150mA
I
O
= 400mA
This data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies or omissions. All specifications are subject to change without notice.
PA02U REV. L FEBRUARY 1998
1998 Apex Microtechnology Corp.
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