PA167 High Voltage Power Operational Amplifier

Introduction

The Apex Microtechnology PA167 is a high-voltage power operational amplifier designed for applications that require precise analog control at elevated voltage levels. Combining a monolithic MOS amplifier core with power output capability, it can drive demanding loads while retaining the flexibility associated with operational-amplifier circuits.

Part Description

The PA167 is a high-voltage power op amp capable of output voltages up to 200 V and continuous output current up to 1 A. Its monolithic MOS amplifier core supports high-voltage analog signal amplification and controlled power delivery in a compact semiconductor solution.

Key features include:

• Output voltage capability up to 200 V
• Continuous output current capability up to 1 A
• Monolithic MOS amplifier core
• Current-limiting protection
• Over-current flag for fault monitoring
• Output-disable function
• External compensation support
• Adjustable gain and bandwidth behavior through compensation design

External compensation allows designers to optimize stability, bandwidth, and closed-loop performance for the requirements of a specific load or control loop. The output-disable and protection features can help support safer operation in systems that must respond to fault conditions or enter controlled inactive states.

Applications

Potential applications for the PA167 include:

• High-voltage linear power supplies
• Piezoelectric actuator drivers
• Electrostatic transducer drivers
• Programmable voltage sources
• Precision high-voltage control loops
• Laboratory instrumentation
• Industrial test equipment
• High-voltage sensor excitation
• Servo and motion-control systems
• Capacitive load drivers
• Coil, solenoid, and transducer control
• Analog power conditioning circuits

Industries

The PA167 may be used in the following industries:

• Industrial automation
• Test and measurement
• Aerospace and defense
• Scientific research
• Medical equipment
• Semiconductor manufacturing
• Energy and power systems
• Automotive test and development
• Telecommunications infrastructure
• Robotics and motion control

Usage Ideas

1. Piezo Positioning Driver
   Build a closed-loop high-voltage driver for a piezoelectric positioning stage, using external compensation to tune loop stability for the capacitive actuator load.

2. Programmable Bench Supply Stage
   Use the amplifier as the regulated output stage in a programmable high-voltage laboratory supply with current limiting and fault indication.

3. Electrostatic Sensor Excitation Module
   Create a controlled high-voltage excitation circuit for electrostatic sensors or transducers, with output disable functionality for safe system startup and shutdown.

Conclusion

The Apex Microtechnology PA167 is a versatile high-voltage power operational amplifier for analog systems requiring up to 200 V output capability and 1 A continuous current. With current limiting, over-current reporting, output disable control, and external compensation options, it is well suited to precision high-voltage drive, regulation, instrumentation, and industrial control applications.