A 100MS/s 9-bit companding SAR ADC with on-chip input driver in 65nm CMOS for multi-carrier communications

Anindya Saha; Saurabh Chaubey; Ramesh Harjani

doi:10.1109/MWSCAS.2018.8623873

A 100MS/s 9-bit companding SAR ADC with on-chip input driver in 65nm CMOS for multi-carrier communications

Anindya Saha, Saurabh Chaubey, Ramesh Harjani

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This paper presents a 100MS/s 9b companding SAR ADC which exploits the statistical properties of broadband multi-carrier signals to reduce the dynamic range requirement for the ADC. The architecture emulates the performance of a higher resolution ADC by reducing the PAPR of a multi-carrier signal to that of a single carrier. Additionally, gain-before-sampling results in reduced sampling capacitor size which lowers power and area. To verify the concept, a prototype implemented in TSMC's 65nm GP CMOS process consumes 12.27 mW at 100 MS/s while extending the dynamic range of the sub-ADC by 13 dB, and resulting in a Schreier FOM of 150.7 dB.

Original language	English (US)
Title of host publication	2018 IEEE 61st International Midwest Symposium on Circuits and Systems, MWSCAS 2018
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	174-177
Number of pages	4
ISBN (Electronic)	9781538673928
DOIs	https://doi.org/10.1109/MWSCAS.2018.8623873
State	Published - Jul 2 2018
Event	61st IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2018 - Windsor, Canada Duration: Aug 5 2018 → Aug 8 2018

Publication series

Name	Midwest Symposium on Circuits and Systems
Volume	2018-August
ISSN (Print)	1548-3746

Conference

Conference	61st IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2018
Country/Territory	Canada
City	Windsor
Period	8/5/18 → 8/8/18

Bibliographical note

Publisher Copyright:
© 2018 IEEE

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10.1109/MWSCAS.2018.8623873

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Saha, A., Chaubey, S., & Harjani, R. (2018). A 100MS/s 9-bit companding SAR ADC with on-chip input driver in 65nm CMOS for multi-carrier communications. In 2018 IEEE 61st International Midwest Symposium on Circuits and Systems, MWSCAS 2018 (pp. 174-177). Article 8623873 (Midwest Symposium on Circuits and Systems; Vol. 2018-August). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MWSCAS.2018.8623873

A 100MS/s 9-bit companding SAR ADC with on-chip input driver in 65nm CMOS for multi-carrier communications. / Saha, Anindya; Chaubey, Saurabh; Harjani, Ramesh.
2018 IEEE 61st International Midwest Symposium on Circuits and Systems, MWSCAS 2018. Institute of Electrical and Electronics Engineers Inc., 2018. p. 174-177 8623873 (Midwest Symposium on Circuits and Systems; Vol. 2018-August).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Saha, A, Chaubey, S & Harjani, R 2018, A 100MS/s 9-bit companding SAR ADC with on-chip input driver in 65nm CMOS for multi-carrier communications. in 2018 IEEE 61st International Midwest Symposium on Circuits and Systems, MWSCAS 2018., 8623873, Midwest Symposium on Circuits and Systems, vol. 2018-August, Institute of Electrical and Electronics Engineers Inc., pp. 174-177, 61st IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2018, Windsor, Canada, 8/5/18. https://doi.org/10.1109/MWSCAS.2018.8623873

Saha A, Chaubey S, Harjani R. A 100MS/s 9-bit companding SAR ADC with on-chip input driver in 65nm CMOS for multi-carrier communications. In 2018 IEEE 61st International Midwest Symposium on Circuits and Systems, MWSCAS 2018. Institute of Electrical and Electronics Engineers Inc. 2018. p. 174-177. 8623873. (Midwest Symposium on Circuits and Systems). doi: 10.1109/MWSCAS.2018.8623873

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A 100MS/s 9-bit companding SAR ADC with on-chip input driver in 65nm CMOS for multi-carrier communications

Abstract

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