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DTSTART;TZID=UTC:20231005T110000
DTEND;TZID=UTC:20231005T120000
DTSTAMP:20260525T034203
CREATED:20230915T223137Z
LAST-MODIFIED:20231005T234645Z
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SUMMARY:Noise-Shaping SAR ADCs: From Discrete Time to Continuous Time
DESCRIPTION:Noise-Shaping (NS) SAR ADCs become popular recently thanks to their low-power and high-resolution features. This presentation first summarizes and benchmarks different discrete-time (DT) NS-SAR implementations in literature. An open-loop duty-cycled residue amplifier is selected as a power-efficient solution to realize high residue gain. Then\, a digital-predicted mismatch error shaping technique is introduced to improve the DAC linearity. The proposed DT NS-SAR ADC achieves 80 dB SNDR\, 98 dB SFDR in a 31.25 kHz bandwidth while consuming 7.3 μW. Next\, the NS-SAR architecture is extended from DT operation to continuous-time (CT) operation. The ADC sampling switch is removed and the loop filter is duty cycled to realize the CT NS-SAR operation. Compared to DT designs\, the CT NS-SAR ADC is easy to drive and has inherent anti-aliasing function. As a proof of concept\, the proposed CT NS-SAR ADC achieves 77 dB SNDR\, 86 dB SFDR a 62.5 kHz bandwidth with a power consumption of 13.5 μW.  Speaker(s): Prof. Pieter Harpe  Agenda:  This talk will be held virtually. The talk will start with speaker introduction followd by a technical session. Afterwards\, a QA session.  Virtual: https://events.vtools.ieee.org/m/373982
URL:https://www.ieeetoronto.ca/event/noise-shaping-sar-adcs-from-discrete-time-to-continuous-time/
LOCATION:Virtual: https://events.vtools.ieee.org/m/373982
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