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Amplifier HV-AMP200BN-2x2+1

Precise Variable Amplifier 5×200 V

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This device consists of five precision high-voltage amplifiers. At their outputs, they produce a 20× amplification of the input voltage. The amplifiers are arranged in three groups, each group has one signal input. Two groups contain two amplifiers each, one with a positive and one with a negative amplification. Thus, the two groups supply two pairs of symmetrical output voltages. The third group contains only one amplifier with a positive amplification.

The amplifiers are extremely low-noise and DC accurate. They can drive high capacitive loads without any stability problems so that, for example, all conventional piezoelectric actuators can be driven by the device. The DC accuracy and the extremely low noise predestine the device for the amplification of output signals of precise D/A converters. The large signal-to-noise ratio of about 130 dB can only be fully utilized with converters with a resolution of more than 20 bit.

Typical Applications: Precision control of piezoelectric actuators, low-noise precision power supply for high-end measuring systems

#Technical Data


  • Five precise high-voltage amplifiers
  • DC accuracy
  • Low noise
  • Short-circuit proof
  • 19" case


  • Signal inputs: three 50 Ω BNC sockets (VX, VY and VZ)
  • Input voltage: ±10 V max.
  • Input impedance: about 1 MΩ
  • Input current: 0.25 µA typ., 2 µA max.


  • Signal outputs: five 50 Ω BNC sockets
  • Amplification: 3 channels +20, 2 channels -20
  • Output voltage: ±200 V min.
  • Output current: ±10 mA max.
  • Short-circuit proof: short-circuit duration indefinite
  • Bandwidth (-3 dB): DC–2.2 kHz (frequency response equals to a 2nd order Bessel filter)
  • Power bandwidth (sinusoidal output 400 Vpp): 220 Hz typ., 7.5 Hz typ. for a capacitive load of 1 µF
  • Output offset voltage: 100 µV typ., 400 µV max.
  • Noise (DC–500 kHz): 13 µVeff, 110 µVpp typ.
  • Accuracy of the amplification at low frequencies: < 0.5% (0.1% typ.)
  • Temperature coefficient of the amplification at low frequencies: < 100 ppm/K (25 ppm/K typ.)

Power Supply

  • Rated voltage: 100 V, 115 V or 230 V ±10%
  • Rated frequency: 50/60 Hz
  • Power consumption: < 40 VA at full load, < 20 VA without load


  • 2 U 19" plug-in unit for mounting in a 19" cabinet
  • Dimensions:
    • Height: 88 mm, width: 449 mm
    • Depth with heat sink: 398 mm, total depth: 444 mm
  • Cooling: passive heat sink on the rear panel
  • Weight: 10.1 kg


User Manual

Beschreibung-1.00_A.pdf Beschreibung-1.00_A.pdf, 905.0 KB: Download the user manual (currently only available in German)
Information on how to open the various file formats can be found here.

#Additional Information

Shipment Contents

  • Precise Variable Power Supply / Power Amplifier HV-AMP200BN-2x2+1
  • Line cord (universal IEC mains lead, length 1.8 m)
  • Material for mounting in a 19" cabinet
  • User manual (see above)


Coaxial cables
BNC, SHV, MHV, and combinations
(Not part of the shipment, please order separately)