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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. They produce at their outputs a 20-times amplified input voltage. The amplifiers are arranged in three groups, each particular group possess one signal input. Two groups contain two amplifiers each, one with a positive, the other one with a negative amplification. Thus, the two groups supply two pairs of symmetrical output voltages. The last 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 stability problems, so that for example, all usual 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 signal-to-noise ratio of about 130 dB can be fully utilized only 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 Ohm BNC sockets (VX, VY and VZ)
  • Input voltage: ±10 V max.
  • Input impedance: about 1 MOhm
  • Input current: 0.25 µA typ., 2 µA max.


  • Signal outputs: five 50 Ohm 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)