PA61 PA61A RoHS Power Operational Amplifiers COMPLIANT FEATURES Wide Supply Range 10 to 45V High Output Current 10A Peak Low Cost Class C Output Stage Low Quiescent Current 3mA APPLICATIONS Programmable Power Supply Motor/Syncro Driver Valve And Actuator Control DC or AC Power Regulator Fixed Frequency Power Oscillator DESCRIPTION The PA61 and PA61A are high output current operational amplifiers designed to drive resistive, inductive and capacitive loads. Their complementary emitter follower output stage is the simple class C type and opti mized for low frequency applications where crossover distortion is not critical. These amplifiers are not rec ommended for audio, transducer or deflection coil drive circuits above 1 kHz or when distortion is critical. 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 set tings. For continuous operation under load, mounting on a heatsink of proper rating is recommended. This hybrid circuit utilizes thick film conductors, ceramic capacitors, and semiconductor chips to maxi mize reliability, minimize size, and give top performance. Ultrasonically bonded aluminum wires provide reli able 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 voids the product warranty. Please see Application Note 1, General Operating Considerations. Figure 1: Equivalent Schematic 3 Q1A Q1B 2 Q3 4 A1 1 5 Q4 8 C1 Q6B Q6A 6 Apex Microtechnology Inc. Dec 2015 www.apexanalog.com All rights reserved PA61U Rev PPA61 PA61A TYPICAL CONNECTION Figure 2: Typical Connection 2 PA61U Rev P