A 12b 50MS/s fully differential zero-crossing-based ADC without CMFB
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As intrinsic device gain and power supply voltages decrease with CMOS technology scaling, it is becoming increasingly challenging for designers of conventional opamp-based switched-capacitor circuits to meet gain and output swing targets, and to ensure stability. Zero-crossing based circuits (ZCBC) are presented as an alternative architecture where each opamp is replaced with a current source and a zero-crossing detector. This changes the dynamics of the system while preserving the functionality. To further improve the robustness of ZCBC designs, we present a 50MS/s, 12b ZCBC pipelined ADC with fully differential signaling and automatic offset compensation.
Date issued
2009-05Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer ScienceJournal
IEEE International Solid-State Circuits Conference - Digest of Technical Papers, 2009. ISSCC 2009
Publisher
Institute of Electrical and Electronics Engineers
Citation
Brooks, L., and Hae-Seung Lee. “A 12b 50MS/s fully differential zero-crossing-based ADC without CMFB.” Solid-State Circuits Conference - Digest of Technical Papers, 2009. ISSCC 2009. IEEE International. 2009. 166-167,167a. ©2009 Institute of Electrical and Electronics Engineers.
Version: Final published version
Other identifiers
INSPEC Accession Number: 10727916
ISBN
978-1-4244-3458-9