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BUF 0.12 - cryogenic CMOS buffer amplifier

The BUF 0.12 is a CMOS-based precision buffer amplifier, operating in room temperature down to deep cryogenic environments (T = 4.2 K, liquid helium).

BUF 0.12 covers a frequency range from 0 Hz to 10 MHz in terms of max. 1% voltage deviation.

It features a very high input impedance and has an input voltage noise in the order of 5 nV/√Hz.

The device is based on highly-doped silicon CMOS technology which allows for operation over a very wide temperature range from room temperature to liquid helium temperature, provided the device is located in a vacuum cryostat.

Key Features
  • precision voltage buffer DC 0 Hz to 10 MHz
  • wide temperature range T = 300 K down to T = 4.2 K
  • selectable input impedance
  • fully-automated plug’n’play room temperature controller included!
Side and top view
Internal structure
Typical input voltage noise density (V/√Hz) at temperatures T = 5 K (lower trace) and 300 K (upper trace); Operating supply voltage: Vdd/ss = ±3.6 V
Typical input offset fluctuations at T = 5K. Four measurement points were taken each second. RMS value is only around 550 nVrms.
Operating parameters: Vdd/ss = ±3.6 V
The room temperature controller indicates the status of the cryo amplifier and allows for setting the overall amplification factor. (current model subject to changes)
PRICE LIST
APPLICATIONS
Precision Experiments

Driving ion traps and shaping beams
Cryogenic Engineering

Multichannel qubit biasing at temperatures of 4K or mK
Quantum Computing

Qubit Biasing in Quantum Computing
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