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uHVA Series

Micro-Size Zero-Crossing Bi-Polar High Voltage Amplifier With Current and Voltage Monitors

  • Dimensions (2.0”L x 1.0”W x 0.5”H)

  • Easy to Use, No External Components Required

  • Bipolar, Zero-Crossing HV Output

  • Current Sourcing and Sinking

  • Current and Voltage Monitors

  • Excellent Load and Line Regulation

  • 5V Input Models Available

  • Miniature PC Board Mountable Package

  • ±1kV,  ±3kV, and ±5kV Models Available

  • Wide Operating Temp Range (-40°C to +60°C)


The uHVA series is a family of miniature, bi-polar, zero-crossing high voltage amplifiers capable of producing a high voltage up to ±5kV in response to a low voltage (0 to 5V) programming input. Designed for ease of use, the uHVA contains a dual polarity high voltage generator and a high speed, high voltage amplifier in a space-saving (2.0”L x 1.0”W x 0.5”H) encapsulated package.

The uHVA is equipped with both a voltage and current monitor for user feedback. Output voltage is independent of input power voltage and is proportional to the programming voltage (0 to 5V produces negative full scale to positive full scale output) and features excellent linearity. The uHVA also has an enable input that allows the user to disable the internal high voltage generator.

HVM’s proprietary, ultra-compact resonant converter design minimizes quiescent current and operating noise while delivering maximum performance and reliability.

Typical applications for this module include mass spectrometry, electrostatic chucks, pockel cells, electron microscopes, and threat detection.  

Application Schematic
uHVA App Schematic.JPG
Typical Applications
  • Mass Spectrometers

  • Photomultiplier Tubes (PMT)

  • Electrostatic Detectors

  • High Voltage Biasing

  • Electrostatic Chucks

  • Piezo Devices

  • HV Amplifiers


Input Voltage (VIN)

5V ± 10%

HV Output (HVOUT)

±1kV, ±3kV and ±5kV Models Available

Output Tolerance at No Load

± 5%

0.5V to 4.5V (produces –FS to +FS)

Programming Voltage

Voltage Monitor

0.5V - 4.5V output represents -FS to +FS HV output

Current Monitor

0.5V – 4.5V output represents - 100uA to +100uA HV output current

Enable Pin (EN)

Logic controlled enable input. Logic low enables high voltage generator.

Load Regulation

< 0.5%

Output Ripple at Full Load

<1% of FS

Oscillator Frequency

30kHz to 100kHz

uHVA Dimensions.JPG

Rise/Fall Time w/ 30pF Load

<5ms (-90%FS to +90%FS)

Rise/Fall Time w/ 10nF Load

<500ms (-90%FS to +90%FS)

Voltage Reference

2.5V zero-line, for use in calibration of monitors


Encapsulated in high performance epoxy

Case Materials

Thermoset Plastic (Diallyl Phthalate)

Operating Temp Range:

Encapsulated in high performance epoxy

uHVA Pin Key.JPG

Storage Temp Range:

-55⁰C to +85⁰C

uHVA Model Selection Guide.JPG
Innovative High Voltage Products


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