Apex PA50, PA50A Datasheet

MICROTECHNOLOGY

FEATURES

POWER OPERATIONAL AMPLIFIERS

PA50 • PA50A

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• HIGH INTERNAL DISSIPATION — 400 Watts

• HIGH CURRENT — 40A Continuous, 100A PEAK

• HIGH SLEW RATE — 50V/µs

• OPTIONAL BOOST VOLTAGE INPUTS

APPLICATIONS

• SEMI-CONDUCTOR TESTING

DESCRIPTION

The PA50 is a MOSFET power operational amplifier that
extends the performance limits of power amplifiers in slew rate
and power bandwidth, while maintaining high current and
power dissipation ratings.

Boost voltage inputs allow the small signal portion of the
amplifier to operate at a higher voltage than the high current
output stage. The amplifier is then biased to achieve close
linear swings to the supply rails at high currents for extra
efficient operation.

EQUIVALENT SCHEMATIC

PA

50A

∆

U

S

ABe

T

O

E

9

4

9

3

1

1

The JEDEC MO-127 12-pin Power Dip™ package (see
Package Outlines) is hermetically sealed and isolated from the
internal circuits. The use of compressible thermal washers
and/or improper mounting torque will void the product war­ranty. Please see “General Operating Considerations”.

EXTERNAL CONNECTIONS

-V

–IN
+IN

-V

-V

-OUT

-OUT

1
2

s
s

3

TOP

TOP

VIEW

VIEW

4
5
6

12
11
10

9
8
7

b

b

+V
+V

s

+V

s

+OUT
+OUT

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P A50 • P A50A

ABSOLUTE MAXIMUM RATINGS

SPECIFICATIONS

ABSOLUTE MAXIMUM RATINGS

SUPPLY VOLTAGE, +VS to –V
BOOST VOLTAGE, +Vb to -V
OUTPUT CURRENT, within SOA 100A

S

b

100V
130V

POWER DISSIPATION, internal 400W
INPUT VOLTAGE, differential ±20V
INPUT VOLTAGE, common mode ±V
TEMPERATURE, pin solder - 10s 300°C
TEMPERATURE, junction

2

b

175°C
TEMPERATURE, storage –65 to +150°C
OPERATING TEMPERATURE RANGE, case –55 to +125°C

SPECIFICATIONS

PARAMETER TEST CONDITIONS

1

MIN TYP MAX MIN TYP MAX UNITS

PA50APA50

INPUT

OFFSET VOLTAGE, initial 5 10 2 5 mV
OFFSET VOLTAGE, vs. temperature Full temperature range 20 50 * * µV/°V
OFFSET VOLTAGE, vs. supply 10 30 * * µV/V
BIAS CURRENT, initial 10 50 * * pA
BIAS CURRENT vs. supply .01 * pA/V
OFFSET CURRENT, initial 10 50 * * pA
INPUT IMPEDANCE, DC 10" * Ω
IMPUT CAPACITANCE 13 * pF
COMMON MODE VOLTAGE RANGE Full temperature range ±Vb 12 * V

±

COMMON MODE REJECTION,DC Full temp, range, VCM= ±20V 90 100 * * dB
INPUT NOISE 100KHZ BW, Rs=1KΩ 10 * µVrms

GAIN

OPEN LOOP,@ 15Hz Full temperature range 94 102 * * dB
GAIN BANDWIDTH PRODUCT RL=10Ω 3 * MHz
POWER BANDWIDTH RL=4Ω, Vo=80V

Full temperature range

, Av=-10 400 * kHz

P-P

OUTPUT

VOLTAGE SWING Io=40A ±VS 9.5 ±VS 8.7 * * V
VOLTAGE SWING, PA50 ±V
VOLTAGE SWING, PA50A ±V
CURRENT, peak 3ms 10% Duty Cycle 100 * A

=±VS±10V, Io=40A ±VS 5.8 ±VS 5.0 V

BOOST

=±VS±10V, Io=50A ±VS 5.8 ±VS 5.0 V

BOOST

±

±

±
±

± ±

SETTLING TIME TO.1% AV= -10,10V STEP,RL=4Ω 1*µs
SLEW RATE AV=-10 50 * V/µs
RESISTANCE IO=0, NO LOAD, 2MHZ 2.5 * Ω

POWER SUPPLY

VOLTAGE, ±V
VOLTAGE, ±V
CURRENT,quiescent, boost supply 26 32 * * mA

BOOST
S

Full temperature range ±12 ±15 ±65 * * * V
Full temperature range ±3 ±50 * * V

CURRENT, quiescent, total 30 36 * * mA

THERMAL

RESISTANCE,AC,junction to case3Full temperature range, F>60HZ .2 .25 * * °C/W
RESISTANCE,DC,junction to case Full temperature range, F>60HZ .25 .31 * * °C/W
RESISTANCE, junction to air Full temperature range 12 * °C/W
TEMPERATURE RANGE, case Meets full range specification -25 85 * * °C

NOTES: * The specification of PA50A is identical to the specification for PA50 in applicable column to the left

1. Unless otherwise noted: TC = 25°C, DC input specifications are ± value given. Power supply voltage is typical rating.
±V

= ±VS.

BOOST

2. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation
to achieve high MTTF. For guidance, refer to the heatsink data sheet.

3. Rating applies if the output current alternates between both output transistors at a rate faster than 60 Hz.

CAUTION

The PA50 is constructed from MOSFET transistors. ESD handling procedures must be observed.
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]