A 0.8mW 250MS/s time-interleaved asynchronous digital slope ADC

P.J.A. Harpe; C. Zhou; K.J.P. Philips; H.W.H. Groot, de

doi:10.1109/ASSCC.2010.5716582

A 0.8mW 250MS/s time-interleaved asynchronous digital slope ADC

P.J.A. Harpe, C. Zhou, K.J.P. Philips, H.W.H. Groot, de

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Abstract

Slope and digital-ramp converters are normally limited to very low sampling rates, since they require a digital counter at a highly oversampled clock rate. In this work, an asynchronous digital slope architecture is introduced that only requires a non-oversampled clock, thus enabling a much higher speed of operation. At the same time, the low complexity and the inherent accuracy of the slope-architecture enable very good power-efficiency without using calibration techniques. A 2-channel time-interleaved 5 bit asynchronous digital slope ADC was implemented in a 90 nm CMOS technology. The measured prototype achieves an ENOB of 4.6 bit, while operating at 250 MS/s and consuming 0.8 mW from a 1 V supply.

Original language	English
Title of host publication	Proceedings of the 2010 IEEE Asian Solid State Circuits Conference (A-SSCC), 8-10 November 2010, Bejing, China
Place of Publication	Piscataway
Publisher	Institute of Electrical and Electronics Engineers
Pages	1-4
ISBN (Print)	978-1-4244-8300-6
DOIs	https://doi.org/10.1109/ASSCC.2010.5716582
Publication status	Published - 2010

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title = "A 0.8mW 250MS/s time-interleaved asynchronous digital slope ADC",

abstract = "Slope and digital-ramp converters are normally limited to very low sampling rates, since they require a digital counter at a highly oversampled clock rate. In this work, an asynchronous digital slope architecture is introduced that only requires a non-oversampled clock, thus enabling a much higher speed of operation. At the same time, the low complexity and the inherent accuracy of the slope-architecture enable very good power-efficiency without using calibration techniques. A 2-channel time-interleaved 5 bit asynchronous digital slope ADC was implemented in a 90 nm CMOS technology. The measured prototype achieves an ENOB of 4.6 bit, while operating at 250 MS/s and consuming 0.8 mW from a 1 V supply.",

author = "P.J.A. Harpe and C. Zhou and K.J.P. Philips and {Groot, de}, H.W.H.",

year = "2010",

doi = "10.1109/ASSCC.2010.5716582",

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A 0.8mW 250MS/s time-interleaved asynchronous digital slope ADC. / Harpe, P.J.A.; Zhou, C.; Philips, K.J.P.; Groot, de, H.W.H.

Proceedings of the 2010 IEEE Asian Solid State Circuits Conference (A-SSCC), 8-10 November 2010, Bejing, China. Piscataway : Institute of Electrical and Electronics Engineers, 2010. p. 1-4.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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N2 - Slope and digital-ramp converters are normally limited to very low sampling rates, since they require a digital counter at a highly oversampled clock rate. In this work, an asynchronous digital slope architecture is introduced that only requires a non-oversampled clock, thus enabling a much higher speed of operation. At the same time, the low complexity and the inherent accuracy of the slope-architecture enable very good power-efficiency without using calibration techniques. A 2-channel time-interleaved 5 bit asynchronous digital slope ADC was implemented in a 90 nm CMOS technology. The measured prototype achieves an ENOB of 4.6 bit, while operating at 250 MS/s and consuming 0.8 mW from a 1 V supply.

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