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. Analog Integrated Circuits and Signal Processing Springer Journals

Offset-injection digital background calibration for VCO-based ADC

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Springer US
Copyright © 2017 by Springer Science+Business Media, LLC
Engineering; Circuits and Systems; Electrical Engineering; Signal,Image and Speech Processing
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