PA13 PA13A RoHS Power Operational Amplifier COMPLIANT FEATURES Low Thermal Resistance 1.1C/W Current Foldover Protection Excellent Linearity Class A/B Output Wide Supply Range 10V to 45V High Output Current Up to 15A Peak APPLICATIONS Motor, Valve and Actuator Control Magnetic Deflection Circuits up to 10A Power Transducers up to 100 kHz Temperature Control up to 360W Programmable Power Supplies up to 90V Audio Amplifiers up to 120W RMS DESCRIPTION The PA13 is a state of the art high voltage, very high output current operational amplifier designed to drive resistive, inductive and capacitive loads. For optimum linearity, especially at low levels, the output stage is biased for class A/B operation using a thermistor compensated base-emitter voltage multiplier circuit. The safe operating area (SOA) can be observed for all operating conditions by selection of user programmable current limiting resistors. For continuous operation under load, a heatsink of proper rating is recommended. The PA13 is not recommended for gains below 3 (inverting) or +4 (non-inverting). 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 12-pin power SIP is electrically isolated. Figure 1: Equivalent Schematic 12 11 Q2A D1 Q2B 10 9 Q1 Q3 3 4 Q4 Q5 7 8 2 Q6B A1 Q6A 1 C1 5 6 Apex Microtechnology Inc. Dec 2019 www.apexanalog.com All rights reserved PA13U Rev WPA13 PA13A TYPICAL CONNECTION Figure 2: Typical Connection RF +V S 100nF * R R I CL + +VS V OUT + +CL OUT PA13 -CL R CL- FO -VS R L 100nF * -V S * Use 10F per Amp of output current. PINOUT AND DESCRIPTION TABLE Figure 3: External Connections Pin Number Name Description 1 -IN The inverting input. 2 +IN The non-inverting input. 3 OUT The output. Connect this pin to load and to the feedback resistors. The fold-over current limit. Connect to ground if desired. 4 FO See Current Limiting section. 5, 6 -V The negative supply rail. Pins 5 and 6 are internally connected. S Connect to the sinking current limit resistor. Output current flows into this pin 7, 8 -CL through R . The output pin and the load are connected to the other side of R . CL- CL- Pins 7 and 8 are internally connected. Connect to the sourcing current limit resistor. Output current flows out of this pin 9, 10 +CL through R . The output pin and the load are connected to the other side of R . CL+ CL+ Pins 9 and 10 are internally connected. 11, 12 +V The positive supply rail. Pins 11 and 12 are internally connected. S 2 PA13U Rev W