High Voltage Products

Trek 623B

High Voltage Amplifier for Precise Control of Bi-Polar Output Voltages, 0 to ±2 kV DC or Peak AC

Advanced Energy’s Trek 623B is a DC-stable, high voltage amplifier designed to provide precise control of bipolar output voltages.

  • Output Voltage: 0 to ±2 kV DC or Peak AC
  • Output Current: 0 to ±40 mA DC or Peak AC
  • Slew Rate: Greater than 300 V/µs
  • Large Signal Bandwidth: DC to greater than 10 kHz (1% distortion)
  • Overview
  • Technical Specs
  • Documents
  • Accessories
  • Service & Support
  • Distributors


The Trek® 623B features an all-solid-state design for high slew rate, low-noise operation, and an extensive bandwidth of DC to greater than 10 kHz. It’s four-quadrant, active output stage sinks or sources current into reactive or resistive loads throughout the output voltage range. This type of output is essential to achieve accurate output responses and high slew rates demanded by a variety of loads, including highly capacitive or reactive loads.

Designed to provide precise control of bipolar output voltages, the Trek 623B can be used in electrostatic beam deflection, electrooptic modulation, electrophoresis research, piezoelectric poling and driving, and numerous other applications.


  • Achieve high accuracy with a closed-loop system
  • Drive capacitive loads via a four-quadrant output
  • Rely on ultra-accurate outputs thanks to low-output noise
  • Safeguard equipment with short-circuit protection
  • Save costs thanks to maintenance-free operation and an all-solid-state design


  • Dynamic adjustment optimizes the AC response for various load parameters
  • NIST-traceable calibration certificate provided with each unit
  • DC-stable for programmable supply applications
  • Local and remote high voltage ON/OFF capabilities
  • Switch selectable for current limit or trip, graduated one-turn potentiometer adjusts from 0 to 40 mA

Select specifications are shown below. Please see product data sheet for additional specifications.

  • Performance

    Output Voltage Range

    0 to ±2 kV DC or peak AC

    Output Current Range

    0 to ±40 mA


    1000 V/V

    Slew Rate

    Greater than 300 V/μs (10% to 90%, typical)

    Large Signal Bandwidth

    DC to greater 10 kHz (1% distortion)

  • Voltage Monitor


    1/1000th of the high-voltage output signal

    DC Accuracy

    Better than 0.1% of full scale

    DC Offset Voltage

    Less than ±2.5 mV

    Output Noise

    Less than 2 mV rms
    (Measured using the true rms feature of the HP Model 34401A digital multimeter)

    Output Impedance

    0.1 Ω

  • Current Monitor


    0.25 V/mA

    DC Accuracy

    Better than 5% of full scale

    Offset Voltage

    Less than ±5 mV

    Output Noise

    Less than 10 mV
    (Measured using the true rms feature of the HP Model 34401A digital multimeter)

    Bandwidth (-3dB)

    DC to greater than 10 kHz

    Output Impedance

    47 Ω

  • Mechanical


    134 x 432 x 439 mm (5.25 x 17 x 17.25 in)


    13.2 kg (29 lb)

  • Electrical

    Line Voltage

    Factory Set for one of two ranges:
    90 to 127 VAC or 180 to 250 VAC, either at 48 to 63 Hz

    Power Consumption

    220 VA, maximum

  • Operating Conditions


    0 to 40°C (32 to 104°F)

    Relative Humidity

    To 85%, non-condensing


    To 2000 meters (6561.68 ft)

  • Typical Applications

    • Electrostatic beam deflection
    • Electrooptic modulation
    • Electrophoresis research
    • Piezoelectric poling and driving

Specifications are subject to change without notice. Not all options and accessories are available for all models and configurations. Dimensions listed generally refer to standard configurations and module bodies only. Please confirm technical specifications and customizations with a sales representative. Advanced Energy is not responsible for errors or omissions.


Amplifier Selection Calculator

To help you select the appropriate Trek amplifier, we created this calculator. It uses peak-to-peak voltage to help calculate values associated with driving capacitive loads. If you have any difficulty with this software or would rather not do the download, please use the step-by-step calculator procedure.

Documents & Support

View All Trek 623B Accessories

Global Support & Services

Maximize fab productivity and capital equipment ROI with world-class support through each product lifecycle stage — from startup to long-term operation. Our service offerings are based on more than three decades of precision power and applications expertise.

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Applications Support & Consulting

Accelerate tool installations and process development programs, or address specific applications concerns with Advanced Energy's dedicated applications consultants and engineering staff. Benefit from on-site reviews, analyses, and consultations.

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Decrease variability in maintenance costs and provide additional cost protection. Advanced Energy offers whole-box extended warranties.

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Product Support

U.S.: +1 800 446 9167
Asia: +86 29 8874 1895
China: 400 8899 130
EMEA: +44 800 032 1546
U.K.: 08000 321 546

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