An experimental digital SQUID with large dynamic range and low noise

Authors :: Yuh, Perng-Fei
Rylov, Sergey V.
Source :: IEEE Transactions on Applied Superconductivity. June, 1995, Vol. 5 Issue 2, p2129, 4 p.
Publication Year :: 1995
Abstract: A digital superconducting quantum interference device (SQUID) that uses the oversampling delta-modulation technique is fabricated using a novel architecture. The device consists of a pickup coil, a SQUID amplifier, a feedback loop and edge-triggered latching comparators. It generates a sampling frequency which can suppress the quantization noise below the the SQUID intrinsic noise.