R. Huang, D. Gnani, C. Grace, Y. Kolomensky, Y. Mei, A. Papadopoulou
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Cryogenic Calorimetric Signal Readout with 180nm CMOS at 20 mK
We present a demonstration of readout of physical cryogenic calorimetric signals from 20 mK with a two-stage amplifier using 180 nm CMOS technology placed at 20 mK and 700 mK. We observe a number of cryogenic effects in 180 nm CMOS that deviate from typical warm behavior, which are not prohibitive to their cryogenic operation but whose potential impacts we discuss. This represents a new step towards the viability of cryogenic electronics using 180 nm CMOS in cryogenic calorimetric experiments.
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