DESCRIPTION
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”.
The linear relationship of torque output to current input of the modern torque motor makes this simple control circuit ideal for many material processing and testing applications. The sense resistor develops a feedback voltage proportional to motor current and the small signal properties of the Power Op Amp insure accuracy. With this closed loop operation, temperature induced impedance variations of the motor winding are automatically compensated.

FEATURES
*WIDE SUPPLY RANGE — ±10 to ±40V
*HIGH OUTPUT CURRENT — ±10A Peak
*CLASS “C” OUTPUT — Low Cost
*LOW QUIESCENT CURRENT — 2.6mA

APPLICATIONS
*DC SERVO AMPLIFIER
*MOTOR/SYNCHRO DRIVER
*VALVE AND ACTUATOR CONTROL
*DC OR AC POWER REGULATOR

PA51A

Trackback :: http://datasheetblog.com/trackback/2447

댓글을 달아 주세요 Comment