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Grace, C.; Braga, D.; Chen, H.; Christian, D.; Dabrowski, M.; Deptuch, G.; Dwyer, D.; Fried, J.; Gao, S.; Hoff, J.; Holm, S.; Lin, C.-J.; Lopriore, E.; Lu, Y.; Luk, K.-B.; Miryala, S.; Prakash, T.; Richardson, H.; Shenai, A.; Tarpara, E.; Vernon, E.; Zhang, J.
IEEE transactions on nuclear science, 1/2022, Letnik: 69, Številka: 1Journal Article
The second and final version of ColdADC, called ColdADC_P2, is presented. ColdADC_P2 is a 16-channel, 12-bit, 2 MS/s digitizer application-specific integrated circuit (ASIC) intended for use inside the DUNE Far Detector. ColdADC_P2 contains two 16 MS/s pipelined analog-to-digital converters (ADCs) that each digitizes the output of eight sample-and-hold amplifiers (SHAs). Because the application requires immersion in liquid argon (LAr), ColdADC_P2 was developed using specialized design techniques for long-term reliability in cryogenic environments and a customized cryogenic standard cell library. ColdADC_P2, with a die area of approximately 52.4 mm2 and fabricated in 65-nm CMOS technology, achieves 130-Formula Omitted rms noise performance and 11.8-bit effective-number-of-bits (ENOB) at a temperature of 77 K, with channel-to-channel crosstalk of
