Differential Amplifier 2014
Peter Märki from the Nanophysics group of Prof. Ensslin at ETH Zurich has realized a differential amplifier with extraordinarily low input voltage noise.
The input voltage noise is in the range of 1nV/√Hz, which equals the thermal noise level of a 60Ω resistor at room temperature. The input current noise is in the range of 7fA/√Hz. The most similar commercially available amplifier we know is the LI-75A with 3 times the voltage noise and two times the current noise.
Data sheet: Download specs differential amplifier (DOCX, 1.6 MB)
Detailed description: differential amplifier 2014
Available in small batch series. Cost: 3.8 kCHF (four channel amplifier together with power supply; excl. shipment, taxes, no service or guarantee).
News as of Jan. 2015: due to large demand and shortage of essential components, we can currently only deliver up to 2 devices per customer.
To order, please contact KTT officer .