A jitter-resilient sampling technique for high-resolution ADCs in wideband RF receivers

Shiva Jamali-Zavareh, Ramesh Harjani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

In this paper, we analyze a novel sampling technique that addresses the clock jitter problem in high resolution wideband ADCs. The proposed sampler shapes the jitter-induced error in a manner similar to a ΔΣ ADC, which normally shapes the quantization noise. The clock jitter at the sampler is suppressed by the loop filter, and the impact of feedback pulse jitter is reduced through use of switched-capacitor feedback. As opposed to prior studies, we show that the a ΔΣ sampler suppresses the jitter error by more than 10X even at low OSR. As an example, a 2nd-order ΔΣ sampler increases the SJNR by 22 dB at OSR=5, corresponding to more than 3-bit improvement in the achievable SNR. Analysis indicates that increasing the loop order and/or OSR improves the amount of jitter suppression. In addition, the ΔΣ sampler provides the clock programmable anti-aliasing properties of an integration sampler. The analysis was validated via macro-model simulations in MATLAB and circuit simulation in Cadence.

Original languageEnglish (US)
Title of host publication2016 IEEE International Conference on Electronics, Circuits and Systems, ICECS 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages229-232
Number of pages4
ISBN (Electronic)9781509061136
DOIs
StatePublished - Feb 2 2017
Event23rd IEEE International Conference on Electronics, Circuits and Systems, ICECS 2016 - Monte Carlo, Monaco
Duration: Dec 11 2016Dec 14 2016

Publication series

Name2016 IEEE International Conference on Electronics, Circuits and Systems, ICECS 2016

Other

Other23rd IEEE International Conference on Electronics, Circuits and Systems, ICECS 2016
CountryMonaco
CityMonte Carlo
Period12/11/1612/14/16

Fingerprint Dive into the research topics of 'A jitter-resilient sampling technique for high-resolution ADCs in wideband RF receivers'. Together they form a unique fingerprint.

  • Cite this

    Jamali-Zavareh, S., & Harjani, R. (2017). A jitter-resilient sampling technique for high-resolution ADCs in wideband RF receivers. In 2016 IEEE International Conference on Electronics, Circuits and Systems, ICECS 2016 (pp. 229-232). [7841174] (2016 IEEE International Conference on Electronics, Circuits and Systems, ICECS 2016). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICECS.2016.7841174