Offset-injection digital background calibration for VCO-based ADC

Offset-injection digital background calibration for VCO-based ADC A new offset-injection digital background calibration technique for VCO-based ADC is proposed to compensate for VCO nonlinearity. By injecting a predetermined offset signal, the new technique suppresses in-band distortions caused by VCO nonlinearity successfully. The offset-injection technique draws support from orthogonal polynomials least mean square algorithm to improve the computation efficiency. A dual-path all-standard-cell VCO-based ADC is also proposed to inject the calibration signal. The proposed VCO-based ADC achieves 71.9 dB of signal to noise and distortion ratio and 11.65 bits of effective number of bit. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Analog Integrated Circuits and Signal Processing Springer Journals

Offset-injection digital background calibration for VCO-based ADC

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Publisher
Springer US
Copyright
Copyright © 2017 by Springer Science+Business Media, LLC
Subject
Engineering; Circuits and Systems; Electrical Engineering; Signal,Image and Speech Processing
ISSN
0925-1030
eISSN
1573-1979
D.O.I.
10.1007/s10470-017-1014-3
Publisher site
See Article on Publisher Site

Abstract

A new offset-injection digital background calibration technique for VCO-based ADC is proposed to compensate for VCO nonlinearity. By injecting a predetermined offset signal, the new technique suppresses in-band distortions caused by VCO nonlinearity successfully. The offset-injection technique draws support from orthogonal polynomials least mean square algorithm to improve the computation efficiency. A dual-path all-standard-cell VCO-based ADC is also proposed to inject the calibration signal. The proposed VCO-based ADC achieves 71.9 dB of signal to noise and distortion ratio and 11.65 bits of effective number of bit.

Journal

Analog Integrated Circuits and Signal ProcessingSpringer Journals

Published: Jun 21, 2017

References

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