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Time-Division SQUID Multiplexers



Kent D. Irwin, Leila R. Vale, Norman F. Bergren, Steven Deiker, Erich N. Grossman, Gene C. Hilton, John M. Martinis, Sae Woo Nam, Carl D. Reintsema, David A. Rudman, Martin Huber


SQUID multiplexers (MUX) make is possible to build arrays of thousands of low-temperature bolometers and microcalorimeters based on superconducting transition-edge sensors (TES) with a manageable number of readout channels. We discuss the technical tradeoffs between proposed time-division multiplexer (TDM) and frequency-division multiplexer (FDM) schemes and motivate our choice of TDM. Our first-generation SQUID MUX is now in use in an astronomical instrument. We describe our second-generation SQUID MUX, which is based on a new architecture that significantly reduces the power dissapation at the first stage, allowing thousands of SQUIDs to be operated at the base temperature of the cryostat.
Proceedings Title
Proc., 9th Intl Wkshp on Low Temp. Detectors (LTD)
AIP 605
Conference Dates
July 22-29, 2001
Conference Location
Madison, WI, USA


bolometer, multiplexers, SQUID, submillimeter bolometer array, superconducting, transition-edge sensors


Irwin, K. , Vale, L. , Bergren, N. , Deiker, S. , Grossman, E. , Hilton, G. , Martinis, J. , Nam, S. , Reintsema, C. , Rudman, D. and Huber, M. (2002), Time-Division SQUID Multiplexers, Proc., 9th Intl Wkshp on Low Temp. Detectors (LTD), Madison, WI, USA, [online], (Accessed June 22, 2024)


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Created January 31, 2002, Updated October 12, 2021