A 0.8-μW switched-capacitor sigma-delta modulator using a class-c inverter

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7 Citations (Scopus)


An ultra low power second-order switched-capacitor (SC) sigma-delta (ΣΔ) modulator is presented. Using of a class-C inverter instead of an operational transconductance amplifier (OTA) enables the SC SA modulator to achieve sub-μW power consumption. The proposed modulator has been implemented using a 0.35-μm CMOS process. The measured peak SNR of the modulator is 56 dB in a 3-kHz signal bandwidth with sampling frequency of 200 kHz. Its dynamic range is approximately 56 dB and the power consumption is only 0.8 μW with a 1-V power supply.

Original languageEnglish
Pages (from-to)I1152-I1155
JournalProceedings - IEEE International Symposium on Circuits and Systems
Publication statusPublished - 2004
Event2004 IEEE International Symposium on Cirquits and Systems - Proceedings - Vancouver, BC, Canada
Duration: 2004 May 232004 May 26

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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