Apex PA02A, PA02 Datasheet

FEA TURES

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MICROTECHNOLOGY

POWER OPERATIONAL AMPLIFIERS

PA02 • PA02A

• HIGH POWER BANDWIDTH — 350kHz

• HIGH SLEW RATE — 20V/µs

• 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 inter­connections at all operating temperatures. The 8-pin TO-3
package is hermetically sealed and electrically isolated.
Isolation washers are not recommended. The use of com­pressible thermal washers and/or improper mounting torque
will void the product warranty. Please see “General Operat­ing Considerations”.

EQUIVALENT SCHEMATIC

2

R1

R2 R3

R4

6

5

R8

R9 R10

R11

7

R5

Q2

A1

Q7

R12

Q1

Q8

R15

R6

R13

Q4

Q5

R7

Q3

Q6

R14

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D1

1

3

4

8

D2

TYPICAL APPLICATION

Vehicular Sound System Power Stage

100K

+12

R

PA02

.27

R
.27

CL+

CL–

Ω

3.2

Ω

16W

Ω

.47µF

16K

1K

IN

.001µF

.47µF

LOW INTERNAL LOSS MAXIMIZES EFFICIENCY

16K

–12

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 protec­tion in the event of an output short circuit.

EXTERNAL CONNECTIONS

R

CL+

+V

S

2

TOP VIEW

7

–V

S

1

8

CL–

CL+

R

CL–

OUT

–IN

OUT

4

5

+IN

3

6

P A02 • P A02A

ABSOLUTE MAXIMUM RATINGS

SPECIFICATIONS

ABSOLUTE MAXIMUM RATINGS

SUPPLY VOLTAGE, +VS to –V
OUTPUT CURRENT, within SOA 5A
POWER DISSIPATION, internal

S

1

38V

48W
INPUT VOLTAGE, differential ±VS –5V
INPUT VOLTAGE, common mode ±VS –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

SPECIFICATIONS

PARAMETER TEST CONDITIONS

PA02

2, 6

MIN TYP MAX MIN TYP MAX UNITS

PA02A

INPUT

OFFSET VOLTAGE, initial TC = 25°C ±5 ±10 ±1 ±3mV
OFFSET VOLTAGE, vs. temperature Full temperature range ±10 ±50 * ±25 µV/°C
OFFSET VOLTAGE, vs. supply TC = 25°C ±10 * µV/V
OFFSET VOLTAGE, vs. power TC = 25°C ±6*µV/W
BIAS CURRENT, initial TC = 25°C 50 200 25 100 pA
BIAS CURRENT, vs. temperature TC = 85°C 200 * pA/°C
BIAS CURRENT, vs. supply TC = 25°C .01 * pA/V
OFFSET CURRENT, initial TC = 25°C 25 100 15 50 pA
OFFSET CURRENT, vs. temperature TC = 85°C 100 * pA/°C
INPUT IMPEDANCE, DC TC = 25°C 1000 * GΩ
INPUT CAPACITANCE TC = 25°C3*pF
COMMON MODE VOLT. RANGE5, Pos. Full temperature range +VS –6 +VS –3 * * V
COMMON MODE VOLT. RANGE5, Neg. Full temperature range –VS +6 –VS +5 * * V
COMMON MODE REJECTION, DC Full temperature range 70 100 * * dB

GAIN

OPEN LOOP GAIN at 10Hz TC = 25°C, 1kΩ load 103 * dB
OPEN LOOP GAIN at 10Hz Full temp. range, 10kΩ load 86 100 * * dB
GAIN BANDWIDTH PRODUCT at 1MHz TC = 25°C, 10Ω load 4.5 * MHz
POWER BANDWIDTH TC = 25°C, 10Ω load 350 * kHz
PHASE MARGIN Full temp. range, 10Ω load 30 * °

OUTPUT

VOLTAGE SWING
VOLTAGE SWING

3
3

TC = 25°C, IO = 5A, R
Full temp. range, IO = 2A ±VS –2 ±VS –1.2 * * V

= .08Ω±V

CL

–4 ±VS –3 * * V

S

CURRENT, peak TC = 25°C5*A
SETTLING TIME to .1% TC = 25°C, 2V step .6 * µs
SLEW RATE TC = 25°C1320**V/µs
CAPACITIVE LOAD Full temp. range, AV > 10 SOA *
HARMONIC DISTORTION PO = .5W, F = 1kHz, RL = 10Ω .004 * %
SMALL SIGNAL rise/fall time RL = 10Ω, AV = 1 100 * ns
SMALL SIGNAL overshoot RL = 10Ω, AV = 1 10 * %

POWER SUPPLY

VOLTAGE Full temperature range ±7 ±15 ±19 * * * V
CURRENT, quiescent TC = 25°C2740**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

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. +VS and –VS denote the positive and negative supply rail respectively. Total VS is measured from +VS to –VS.

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.

CAUTION

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.

APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: [phone]

TYPICAL PERFORMANCE
GRAPHS

P A02 • P A02A

50

POWER DERATING

40

T=T

C

30

20

10

T=T

A

0

0 25 50 75 100 125

INTERNAL POWER DISSIPATION, P(W)

120
100

(dB)

OL

80

TEMPERATURE, T (°C)

SMALL SIGNAL RESPONSE

60
40

20

0

OPEN LOOP GAIN, A

–20

10 1K 10K .1M 1M

1 100 10M

FREQUENCY, F (Hz)

150

OUTPUT VOLTAGE SWING

3.5

(V)

O

3.0

–V

S

2.5
TC = 25 to 85°C

2.0

1.5

±V

O

1.0

.5

SATURATION VOLTAGE, V

12345

0

OUTPUT CURRENT, I

PHASE RESPONSE

0

–30
–60

Φ

–90

–120

PHASE, (°)

–150
–180

–210

10 10K 1M

1 100 .1M 10M

1K

FREQUENCY, F (Hz)

3.0

CURRENT LIMIT

2.5

LIM

2.0

RCL = 0.3

1.5
R

= 0.62ΩΩ

1.0

.5

CURRENT LIMIT, I (A)

0

–25 50 100

(A)

O

025 75

CASE TEMPERATURE, T (°C)

POWER RESPONSE

30

CL

125

C

| +VS | + | –VS | = 36V

PP

23

O

18

| + | –VS | = 30V

| +V

S

13

10

7.8

OUTPUT VOLTAGE, V (V )

6

.1M .2M .5M 1M

.3M

.7M

FREQUENCY, F (Hz)

BIAS CURRENT

B

256

64

16

4

1

.25

.06

NORMALIZED BIAS CURRENT, I (X)

√

(nV/ Hz)

n

5456585

–15 105

40

25

CASE TEMPERATURE, T (°C)

C

INPUT NOISE

35
30

25

20

15

10

INPUT NOISE VOLTAGE, e

10 100 10K .1M

1K

FREQUENCY, F (Hz)

COMMON MODE REJECTION

120

100

80

60

40

20

1 10K

COMMON MODE REJECTION, CMR (dB)

(X)

Q

1.6

FREQUENCY, F (Hz)

QUIESCENT CURRENT

.1M10 100 1K 1M

1.5

1.4

1.3

1.2

1.1

1.0
.9

0 25 50 75 100

–25 125

CASE TEMPERATURE, T

NORMALIZED QUIESCENT CURRENT, I

(°C)

C

10M

POWER SUPPLY REJECTION

140
120
100

+V

80

S

60

–V

40

S

20

0

10

POWER SUPPLY REJECTION, PSR (dB)

100 1K 10K .1M 1M 10M

FREQUENCY, F(Hz)

3

SETTLING TIME

2.5

2

1mV NO LOAD

1.5

TIME, t (µS)

1

.5

0

134 7

256

10mV NO LOAD

10mV 10 LOAD

Ω

OUTPUT CHANGE FROM ZERO, VOLTS

8

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P A02 • PA02A

,

)

OPERATING

CONSIDERATIONS

HARMONIC DISTORTION

1

GAIN = 1
LOAD = 10

.3

.1

.03

.01

DISTORTION, THD (%)

.003

.001

100 1K 3K .1M

300 10K 30K

15

(V)

10

O

5

0

–5

OUTPUT VOLTAGE, V

–10

–15

.3

.2

(V)

O

.1

0

–.1

–.2

OUTPUT VOLTAGE, V

–.3

0

–.3

∆

–.6

–.9

–1.2

DELTA GAIN WITH LOAD, A (dB)

–1.5

Ω

= 50mW

O

P

= .5W

O

P

= 5W

O

P

FREQUENCY, F (Hz)

PULSE RESPONSE

VIN = ±1V, tr = 100ns

LOAD = 10

25

134

0

TIME, t (µS)

Ω

PULSE RESPONSE

VIN = ±.2V, tr = 50ns

0 .5 1.0 1.5

TIME, t (µS)

LOADING EFFECTS

IO = 150mA

= 400mA

I

O

FREQUENCY

10K

F (Hz

.3M

.1M100 1K

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 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:

1. Under transient conditions,

capacitive and dynamic*
loads up to the following maxi-

5.0

(A)

S

4.0

3.0

2.0

1.5

1.0

0.7

0.5

0.3

0.2

OUTPUT CURRENT FROM +V OR –V

2 3 5 7 10 15 20 25 30 40

SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE V

T

T

C

= 125°C

T

C

T

C

= 70°C

C

= 100°C

= 25°C

BREAKDOWN

SECOND

STEADY STATE

THERMAL

t = 5ms

–VO (V)

S

mums are safe:

CAPACITIVE LOAD INDUCTIVE LOAD

±V

S

I

= 2A I

LIM

= 5A I

LIM

= 2A I

LIM

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
limiting, the inductor should be capacitively coupled or the current limit must be lowered to meet SOA criteria.

= 5A, or 17V below the supply rail with I

LIM

= 2A while the amplifier is current

LIM

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

= 85°C.

C

±V

SHORT TO

S

C, L OR EMF LOAD COMMON

±V

S

SHORT TO

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
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.

is 0.12 ohm, however

CL

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 recom­mended to maintain positive clamping pressure on heatsink mounting surfaces. Long
periods of thermal cycling can loosen mounting screws and increase thermal resis­tance.

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.

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.