PA85 High-Voltage Power Operational Amplifiers

Apex offers high-voltage, high-power bandwidth MOSFET operational amplifier designed for output currents up to 200 mA

Image of Apex Microtechnology's PA85 High-Voltage Power Operational AmplifiersApex Microtechnology's PA85 is a high-voltage, high-power bandwidth MOSFET operational amplifier designed for output currents up to 200 mA. Output voltages can swing up to ± 215 V with a dual supply and up to +440 V with a single supply. The safe operating area (SOA) has no second-breakdown limitations and can be observed with all types of loads by choosing an appropriate current limiting resistor. High accuracy is achieved with a cascade input circuit configuration. All internal biasing is referenced to a bootstrapped Zener-MOSFET current source. As a result, the PA85 features an unprecedented supply range and excellent supply rejection.

The MOSFET output stage is biased on for linear operation. External compensation provides user flexibility. This hybrid circuit utilizes thick film (cermet) resistors, ceramic capacitors, and silicon semiconductor chips to maximize reliability, minimize size, and provide 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.

Features Applications
  • High-voltage 450 V (± 225 V)
  • High slew rate of 1000 V/μS
  • 200 mA high output current
  • High-voltage instrumentation
  • Piezo transducer excitation
  • Programmable power supplies up to 430 V
  • Electrostatic transducers and deflection
High-Voltage Amplifiers
ImageManufacturer Part NumberDescriptionAmplifier TypeNumber of CircuitsAvailable QuantityBuy Now
IC OPAMP POWER 100MHZ TO3-8PA85IC OPAMP POWER 100MHZ TO3-8Power138 - Immediate
IC OPAMP POWER 100MHZ TO3-8PA85AIC OPAMP POWER 100MHZ TO3-8Power1121 - Immediate
Published: 2013-08-02