Very High Speed 1000V/µs, High Voltage 450V Power Amplifier

The PA85 is a high voltage, high power bandwidth MOS- FET operational ampliier designed for output currents up to 200mA. Output voltages CAN swing up to 215V with a dual supply and up to +440 volts 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 cascode input circuit coniguration. 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 lexibility. By Cirrus Logic, Inc.