PA79

350V, 350V/µs Slew Rate, Low Quiescent Current Power Amplifier

Overview

Description

The PA79 is a dual high voltage, high speed Precision IC power op amp with performance and unique features not found previously in any commercially available OpAmp. This approach provides a cost-effective, high density solution to applications where multiple amplifiers are required.

Novel input stage design of this amplifier provides extremely high slew rates in pulse applications while maintaining low quiescent current of under 1mA. This novel input stage also has the effect of adding variables to the power response and slew rate characteristics of the amplifier. To a lesser degree, there are also input related effects on unity gain bandwidth and phase. It is important to note that the slew rate is a strong function of input voltage amplitude. It should be noted that the package tab needs to be connected to a stable reference such as GND for high slew rates.

Applications:

• Piezoelectric Positioning and Actuation
• Electrostatic Deflection
• Deformable Mirror Actuators
• Chemical and Biological Stimulators

Features

• Unique (Patent Pending) Technique for Very Low Quiescent Current
• Over 350 V/µs Slew Rate
• Wide Supply Voltage
• Single Supply: 20V to 350V
• Split Supplies: ±10V to ±175V
• Output Current (Per Amplifier) - 150mA Continuous; 200mA Peak
• Up to 26 Watt Dissipation Capability (Dual)
• Over 200 kHz Power Bandwidth

Diagram