DocumentCode :
2158610
Title :
A fully-digital beat-frequency based ADC achieving 39dB SNDR for a 1.6mVpp input signal
Author :
Bongjin Kim ; Weichao Xu ; Kim, Chul Han
Author_Institution :
Univ. of Minnesota, Minneapolis, MN, USA
fYear :
2013
fDate :
22-25 Sept. 2013
Firstpage :
1
Lastpage :
4
Abstract :
A fully-digital VCO-based ADC featuring a novel beat frequency detection scheme is demonstrated in 65nm LP CMOS. The proposed beat frequency based ADC is unique compared to previous VCO-based ADCs in that it is highly effective in measuring extremely small changes (e.g., 0.01%) in the VCO frequency within a short sampling time (e.g., 100 VCO periods). Direct amplifier-less A-to-D conversion of a 1.6mVpp differential input signal with 39dB SNDR and 6.2 ENOB was experimentally verified.
Keywords :
CMOS integrated circuits; analogue-digital conversion; voltage-controlled oscillators; ADC; ENOB; LP CMOS; SNDR; direct amplifier-less A-to-D conversion; fully-digital VCO; fully-digital beat-frequency; CMOS integrated circuits; Frequency measurement; Semiconductor device measurement; Sensors; Signal resolution; Voltage measurement; Voltage-controlled oscillators;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Custom Integrated Circuits Conference (CICC), 2013 IEEE
Conference_Location :
San Jose, CA
Type :
conf
DOI :
10.1109/CICC.2013.6658553
Filename :
6658553
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=2158610
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