A Highly-Digital VCO-Based Analog-to-Digital Converter Using Phase Interpolator and Digital Calibration

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A first-order time-based modulator Delta Sigma using voltage-controlled oscillator (VCO) is presented. The proposed modulator employs phase interpolation technique to enhance the time resolution of the VCO and digital calibration to improve the linearity of the VCO tuning curve. The proposed modulator, implemented in 0.13 mu m CMOS process, achieves 55 dB peak signal-to-noise ratio and 52.5 dB peak signal-to-noise-and-distortion ratio at 600 MHz sampling frequency for 20 MHz input bandwidth and consumes 14.3 mW.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2012-08
Language
English
Article Type
Article
Keywords

VOLTAGE-CONTROLLED OSCILLATOR; QUANTIZER; BANDWIDTH

Citation

IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, v.20, no.8, pp.1368 - 1372

ISSN
1063-8210
DOI
10.1109/TVLSI.2011.2159635
URI
http://hdl.handle.net/10203/102247
Appears in Collection
EE-Journal Papers(저널논문)
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