APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com

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TYPICAL APPLICATION

FIGURE 1. VOLTAGE-TO-CURRENT CONVERSION

DC and low distortion AC current waveforms are delivered

to a grounded load by using matched resistors (A and B

sections) and taking advantage of the high common mode

rejection of the PA10.

Foldover current limit is used to modify current limits based

on output voltage. When load resistance drops to 0, the current

is limited based on output voltage. When load resistance drops

to 0, the current limit is 0.79A resulting in an internal dissipa-

tion of 33.3 W. When output voltage increases to 36V, the

current limit is 1.69A. Refer to Application Note 9 on foldover

limiting for details.

EXTERNAL CONNECTIONS

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FEATURES

• GAIN BANDWIDTH PRODUCT — 4MHz

• TEMPERATURE RANGE — –55 to +125°C (PA10A)

• EXCELLENT LINEARITY — Class A/B Output

• WIDE SUPPLY RANGE — ±10V to ±50V

• HIGH OUTPUT CURRENT — ±5A Peak

APPLICATIONS

• MOTOR, VALVE AND ACTUATOR CONTROL

• MAGNETIC DEFLECTION CIRCUITS UP TO 4A

• POWER TRANSDUCERS UP TO 100kHz

• TEMPERATURE CONTROL UP TO 180W

• PROGRAMMABLE POWER SUPPLIES UP TO 90V

• AUDIO AMPLIFIERS UP TO 60W RMS

DESCRIPTION

The PA10 and PA10A are high voltage, high output current

operational amplifiers designed to drive resistive, inductive

and capacitive loads. 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 selec-

tion of user programmable current limiting resistors. Both

amplifiers are internally compensated for all gain settings. For

continuous operation under load, a heatsink of proper rating

is recommended.

This hybrid integrated circuit utilizes 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. The

use of compressible isolation washers voids the warranty.

EQUIVALENT SCHEMATIC

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8-PIN TO-3

PACKAGE STYLE CE