A 10kHz-BW 93.7dB-SNR Chopped ΔΣ ADC with 30V Input CM Range and 115dB CMRR at 10kHz
Conference Paper
(2017)
Author(s)
Long Xu (TU Delft - Electronic Instrumentation)
Johan H Huijsing (TU Delft - Electronic Instrumentation)
K.A.A Kofi (TU Delft - Microelectronics)
Research Group
Electronic Instrumentation
DOI related publication
https://doi.org/10.1109/ASSCC.2017.8240213
To reference this document use:
https://resolver.tudelft.nl/uuid:f2bba6c3-7bea-43b8-ab73-45ce6b5e5f9d
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Publication Year
2017
Language
English
Research Group
Electronic Instrumentation
Pages (from-to)
49-52
ISBN (electronic)
978-1-5386-3178-2
Abstract
This paper presents a 15-bit ΔΣ ADC with 10kHz-BW which can handle 30V CM voltages with high AC CMRR (in excess of 115dB at 10kHz) while operating from a 1.8 V supply. An HV capacitively-coupled chopper at its input enables the accurate sampling of input signals beyond the supply rails. Chopping is used to mitigate the ADC's offset and to enhance its CMRR, especially at high frequencies.
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