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The PA51 and PA51A are high voltage, high output current operational amplifiers designed to drive resistive, inductive and capacitive loads. Their complementary common emitter output stage is the simple class C type optimized for low frequency applications where crossover distortion is not critical. These amplifiers are not recommended for audio, transducer or deflection coil drive circuits. The safe operating area (SOA) is fully specified and can be observed for all operating conditions by selection of user programmable current limiting resistors. Both amplifiers are internally compensated for all gain settings. For continuous operation under load, mounting on a heatsink of proper rating is recommended. Do not use isolation washers!
This hybrid integrated circuit utilizes thick film conductors, 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 electrically isolated and hermetically sealed. The use of compressible thermal washers and/or improper mounting torque will void the product warranty. Please see "General Operating Considerations".
PA51A Maximum Ratings
SUPPLY VOLTAGE, +VS to VS ..................80V OUTPUT CURRENT, within SOA ..................10A POWER DISSIPATION, internal..................97W INPUT VOLTAGE, differential ................ ±VS 3V INPUT VOLTAGE, common mode................. ±VS TEMPERATURE, junction....................1 200 TEMPERATURE, pin solder .................-10s 300 TEMPERATURE RANGE, storage ............65 to +150 OPERATING TEMPERATURE RANGE, case........ -55 to +125
PA51A Features
• WIDE SUPPLY RANGE - ±10 to ±40V • HIGH OUTPUT CURRENT - ±10A Peak • SECOND SOURCEABLE - OPA501, 8785 • CLASS "C" OUTPUT - Low Cost • LOW QUIESCENT CURRENT - 2.6mA
PA51A Typical Application
• DC SERVO AMPLIFIER • MOTOR/SYNCHRO DRIVER • VALVE AND ACTUATOR CONTROL • DC OR AC POWER REGULATOR