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Time-Division Superconducting Quantum Interference Device Multiplexer for Transition-Edge Sensors



Piet DeKorte, Joern Beyer, Steven Deiker, Gene C. Hilton, Kent D. Irwin, Michael MacIntosh, Sae Woo Nam, Carl D. Reintsema, Leila R. Vale, Martin Huber


We report on the design and performance of our second-generation 32-channel time-division multiplexer developed for the read-out of large-format arrays of superconducting transition-edge sensors. We present design issues and measurement results on its gain, bandwidth, noise, and cross talk. In particular, we discuss noise performance at low frequency, important for long interrupted sub-millimeter/far-infrared observations, and present a scheme for mitigation of low-frequency noise. Also, results are presented on the decoupling of the input circuit from the first-stage feedback signal by means of a balanced superconducting quantum interference device pair. Finally, the first results of multiplexing several input channels in a switched, digital flux-lock loop are shown.
Review of Scientific Instruments


bolometers, cryogenic electronics, microcalorimeters, multiplexer, SQUID, transition-edge sensors


DeKorte, P. , Beyer, J. , Deiker, S. , Hilton, G. , Irwin, K. , MacIntosh, M. , Nam, S. , Reintsema, C. , Vale, L. and Huber, M. (2003), Time-Division Superconducting Quantum Interference Device Multiplexer for Transition-Edge Sensors, Review of Scientific Instruments (Accessed April 21, 2024)
Created July 31, 2003, Updated October 12, 2021