Technical Program

Paper Detail

Paper:ASP-P21.3
Session:Sigma-Delta Converters IV
Time:Wednesday, May 26, 11:15 - 12:45
Presentation: Poster
Topic: Analog Signal Processing: Data Converters, Sigma Delta, A/D, D/A, other Data Converters
Title: A 0.8-µW SWITCHED-CAPACITOR SIGMA-DELTA MODULATOR USING A CLASS-C INVERTER
Authors: Youngcheol Chae; Yonsei University 
 Minho Kwon; Yonsei University 
 Gunhee Han; Yonsei University 
Abstract: An ultra low power second-order switched-capacitor (SC) sigma-delta (SD) modulator is presented. Using of a class-C inverter instead of an operational transconductance amplifier (OTA) enables the SC SD modulator to achieve sub-uW power consumption. The proposed modulator has been implemented using a 0.35-um 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 uW with a 1-V power supply.
 
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