PA01 PA73 RoHS Power Operational Amplifier COMPLIANT FEATURES Low Cost, Economy Model PA73 High Output Current Up to 5A Peak Excellent Linearity PA01 High Supply Voltage Up to 30V Isolated Case 300V APPLICATIONS Motor, Valve And Actuator Control Magnetic Deflection Circuits up to 4A Power Transducers up to 20 kHz Temperature Control up to 180W Programmable Power Supplies up to 48V Audio Amplifiers up to 50W RMS DESCRIPTION The PA01 and PA73 are high voltage, high output current operational amplifiers designed to drive resis- tive, inductive and capacitive loads. For optimum linearity, the PA01 has a class A/B output stage. The PA73 has a simple class C output stage to reduce cost for motor control and other applications where crossover dis- tortion is not critical and to provide interchangeability with type 3573 amplifiers. The safe operating area (SOA) can be observed for all operating conditions by selection of user programmable current limit resistors. These 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 interconnections at all operating temperatures. The 8-pin TO-3 package is hermetically sealed and electrically isolated. The use of compressible thermal washers and/or improper mounting torque will void the product warranty. Please see Application Note 1, General Operating Considerations. Figure 1: Equivalent Schematic 3 * Q2A D1* Q2B 2 Q1* Q3 1 * Q4* Q5 8 * 4 Q6B A1 Q6A 5 6 Apex Microtechnology Inc. Nov 2017 www.apexanalog.com All rights reserved PA01-73U Rev ZPA01 PA73 TYPICAL CONNECTION Figure 2: Typical Connection * *Use 10F per Amp of output current * 2 PA01-73U Rev Z