High Voltage Power Operational Amplifiers FEATURES The PA92 is a high voltage, low quiescent current MOSFET operational amplifier designed as a low cost solution for driving continuous output currents up to 4A and pulse currents up to 7A. The safe operating area (SOA) has no second breakdown limitations and can be observed for all type loads by choosing an appropriate current limiting resistor. The MOSFET output stage is biased AB for linear operation. External compensation provides flexibility in choosing bandwidth and slew rate for the application. Apex Microtechnology’s Power SIP package uses a minimum of board space allowing for high density circuit boards. The Power SIP package is electrically isolated. ♦ HIGH VOLTAGE — 400V (±200V) ♦ LOW QUIESCENT CURRENT — 10mA ♦ HIGH OUTPUT CURRENT — 4A ♦ PROGRAMMABLE CURRENT LIMIT ♦ PIEZOELECTRIC POSITIONING ♦ HIGH VOLTAGE INSTRUMENTATION ♦ ELECTROSTATIC TRANSDUCERS ♦ PROGRAMMABLE POWER SUPPLIES UP TO 390V EQUIVALENT SCHEMATIC * Bypassing required. Formed leads available See package style EE Copyright © Apex Microtechnology, Inc. 2012 (All Rights Reserved)

PA92 CHARACTERISTICS AND SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS Parameter OUTPUT CURRENT, source, sink, peak, within SOA POWER DISSIPATION, continuous @ TC = 25°C INPUT VOLTAGE, differential INPUT VOLTAGE, common mode TEMPERATURE, junction (Note 2) TEMPERATURE RANGE, storage OPERATING TEMPERATURE RANGE, case The PA92 is constructed from MOSFET transistors. ESD handling procedures must be observed. The exposed substrate contains beryllia (BeO). Do not crush, machine, or subject to temperatures in excess of 850°C to avoid generating toxic fumes. SPECIFICATIONS Parameter Test Conditions INPUT OFFSET...

Test Conditions POWER SUPPLY VOLTAGE (Note 5) CURRENT, quiescent THERMAL RESISTANCE, AC, junction to case (Note 4) Full temp range, F > 60Hz RESISTANCE, DC, junction to case Full temp range, F < 60Hz Full temp range TEMPERATURE RANGE, case Meets full range specifications NOTES: 1. (All Min/Max characteristics and specifications are guaranteed over the Specified Operating Conditions. Typical performance characteristics and specifications are derived from measurements taken at typical supply voltages and TC = 25°C). 2. Long term operation at the maximum junction temperature will result in reduced...

INPUT NOISE VOLTAGE, V (nV√Hz) INPUT NOISE VOLTAGE HARMONIC DISTORTION VOLTAGE DROP FROM SUPPL OPEN LOOP GAIN, A CURRENT LIMIT CURRENT LIMIT, ILIM (A) PHASE COMPENSATION ≥1 150pF 100Ω ≥2 100pF 100Ω ≥3 47pF 0Ω ≥12 10pF 0Ω *CC Never to be <10pF. CC to be rated for the full supply voltage +V to -Vs. Use ceramic NPO (COG) type. Please read Application Note 1 "General Operating Considerations" which covers stability, supplies, heat sinking, mounting, current limit, SOA interpretation, and specification interpretation. Visit www.apexanalog.com for design tools that help automate tasks such as calculations...

SAFE OPERATING CURVES The safe operating area curves define the maximum additional internal power dissipation the amplifier can tolerate when it produces the necessary output to drive an external load. +VS INPUT PROTECTION Although the PA92 can withstand differential voltages up to ±20V, additional external protection is recommended. Low leakage, low capacitance JFETs connected as diodes are recommended (e.g. 2N4416, Q1Q4 in Figure 2). The differential input voltage will be clamped to ±1.4V. This is sufficient overdrive to produce maximum power bandwidth. POWER SUPPLY PROTECTION Unidirectional...