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  • Voltage amplifiers with variable gain 10 to 60 dB (x 3 to x 1,000)
  • Bandwidth DC to 100/200 MHz Independent of Gain (Guaranteed)
  • DC-Drift 0.3µV/°C
  • Input Noise 2.3 nV/√Hz
  • Local and Remote Control

General Description
DHPVA series are high precision amplifiers with unique features delivering an outstanding performance. The exceptional low input voltage drift of only 0.3 µV/°C and the low input noise of 2.3 nV/√Hz enable stable measurements with highest precision, even at maximum amplification. Flat frequency response without peaking is an important feature.

Gain independent of Bandwidth
The amplifier bandwidth remains constant regardless of the gain, permitting an accurate high-speed acquisition while preserving the signal shape independently of the gain setting.

Dynamic Input Range: 10 mV to 100 mV
The multistage design of FEMTO Amplifiers avoids the disadvantages of programmable attenuators or multiplying amplifiers where dynamics are limited by the noise and drift performance of the main amplifying stage.


  • Oscilloscope and Transient-Recorder Preamplifier
  • Photomultiplier-Amplifier
  • Signal-Booster for Optical Receivers and Current Amplifiers
  • Time-Resolved Pulse and Transient Measurements
  • Automated Measurement Systems

Low Noise Input/Output Cable: CAB-LN1 Low Noise Cable

The LUCI-10 amplifier interface allows remote control of FEMTO amplifiers and photoreceivers with a remote control capability from a standard Windows PC with USB port.

Wideband Voltage Amplifiers – 100/200 MHz

Lower Cut-Off FrequencyDC/10 HzDC/10 Hz
Upper Cut-Off Frequency [kHz]10/100 MHz, switchable20/200 MHz, switchable
Gain [dB]10/20/30/40/50/6010/20/30/40/50/60
Gain Accuracy± 0.1 dB± 0.1 dB
Input Noise Voltage [nV/√Hz] 2.32.3
Input Voltage Drift [μV/°C ]0.30.3
Input/Output50 Ohm, BNC50 Ohm, BNC
Output Voltage (Power)± 1 V (+10 dBm) @ 50 Ω Load± 1 V (+10 dBm) @ 50 Ω Load
Monitor OutputDC-100 kHzDC-100 kHz
Control InterfaceTTL/CMOS,
Interface Software OptionLUCI-10 Control Interface Software and Hardware option
Bandwidth and rise/fall times are independent of gain setting – guaranteed and 100% tested. Offset adjustable by trimpot or external analog control voltage. LED gain setting indication. Output short-circuit protected. Power supply ± 15 V via 3-pin LEMO socket. A mating connector is provided with the device. Optional power supply PS-15 available. For further information please view the datasheet.
Typical Performance Characteristics

FEMTO Product Catalog 

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