A 10-bit 10 MS/s SAR ADC with Duty-Cycled Multiple Feedback Filter

Hanyue Li; Yuting Shen; Eugenio Cantatore; Pieter Harpe

doi:10.1109/NEWCAS57931.2023.10198037

A 10-bit 10 MS/s SAR ADC with Duty-Cycled Multiple Feedback Filter

Hanyue Li
, Yuting Shen
, Eugenio Cantatore
, Pieter Harpe

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/Congresprocedure › Conferentiebijdrage › Academic › peer review

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Samenvatting

This paper presents a co-design of a 10-bit SAR ADC and its front-end filter. Because the SAR ADC works as a discrete-time data converter, its input signal only needs to be accurate at its sampling moment. Therefore, the filter can be switched off in the ADC conversion phase to save power. To reduce the start-up time when the filter is activated again, a low-power auxiliary amplifier is used in the ADC conversion phase to maintain the filter output roughly. A 10-bit 10 MS/s SAR ADC with such a duty-cycled multiple feedback filter is fabricated in a 65 nm CMOS technology. The filter power has been reduced by 36% thanks to the proposed duty-cycled operation. The prototype achieves 8.3 ENOB and 59.3 dB SFDR at low input frequencies, and it has 40 dB suppression at the Nyquist input frequency, while consuming 91.1 µ W.

Originele taal-2	Engels
Titel	2023 21st IEEE Interregional NEWCAS Conference (NEWCAS)
Uitgeverij	Institute of Electrical and Electronics Engineers
Pagina's	1-5
Aantal pagina's	5
ISBN van elektronische versie	979-8-3503-0024-6
DOI's	https://doi.org/10.1109/NEWCAS57931.2023.10198037
Status	Gepubliceerd - 7 aug. 2023
Evenement	21st IEEE Interregional NEWCAS Conference, NEWCAS 2023 - Edinburgh, Verenigd Koninkrijk Duur: 26 jun. 2023 → 28 jun. 2023

Congres

Congres	21st IEEE Interregional NEWCAS Conference, NEWCAS 2023
Land/Regio	Verenigd Koninkrijk
Stad	Edinburgh
Periode	26/06/23 → 28/06/23

Financiering

This work with project number 16594 is financed by the Dutch Research Council (NWO).

Financiers
Nederlandse Organisatie voor Wetenschappelijk Onderzoek

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10.1109/NEWCAS57931.2023.10198037

202306 NEWCAS paperFinale auteursversie , 1,04 MBLicentie: Onbepaald

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@inproceedings{23c561fb57904224bd76964760afff79,

title = "A 10-bit 10 MS/s SAR ADC with Duty-Cycled Multiple Feedback Filter",

abstract = "This paper presents a co-design of a 10-bit SAR ADC and its front-end filter. Because the SAR ADC works as a discrete-time data converter, its input signal only needs to be accurate at its sampling moment. Therefore, the filter can be switched off in the ADC conversion phase to save power. To reduce the start-up time when the filter is activated again, a low-power auxiliary amplifier is used in the ADC conversion phase to maintain the filter output roughly. A 10-bit 10 MS/s SAR ADC with such a duty-cycled multiple feedback filter is fabricated in a 65 nm CMOS technology. The filter power has been reduced by 36\% thanks to the proposed duty-cycled operation. The prototype achieves 8.3 ENOB and 59.3 dB SFDR at low input frequencies, and it has 40 dB suppression at the Nyquist input frequency, while consuming 91.1 µ W.",

keywords = "duty cycle, low power, multiple feedback filter, SAR ADC",

author = "Hanyue Li and Yuting Shen and Eugenio Cantatore and Pieter Harpe",

year = "2023",

month = aug,

day = "7",

doi = "10.1109/NEWCAS57931.2023.10198037",

language = "English",

pages = "1--5",

booktitle = "2023 21st IEEE Interregional NEWCAS Conference (NEWCAS)",

publisher = "Institute of Electrical and Electronics Engineers",

address = "United States",

note = "21st IEEE Interregional NEWCAS Conference, NEWCAS 2023 ; Conference date: 26-06-2023 Through 28-06-2023",

}

Li, H, Shen, Y, Cantatore, E & Harpe, P 2023, A 10-bit 10 MS/s SAR ADC with Duty-Cycled Multiple Feedback Filter. in 2023 21st IEEE Interregional NEWCAS Conference (NEWCAS)., 10198037, Institute of Electrical and Electronics Engineers, blz. 1-5, 21st IEEE Interregional NEWCAS Conference, NEWCAS 2023, Edinburgh, Verenigd Koninkrijk, 26/06/23. https://doi.org/10.1109/NEWCAS57931.2023.10198037

TY - GEN

T1 - A 10-bit 10 MS/s SAR ADC with Duty-Cycled Multiple Feedback Filter

AU - Li, Hanyue

AU - Shen, Yuting

AU - Cantatore, Eugenio

AU - Harpe, Pieter

PY - 2023/8/7

Y1 - 2023/8/7

N2 - This paper presents a co-design of a 10-bit SAR ADC and its front-end filter. Because the SAR ADC works as a discrete-time data converter, its input signal only needs to be accurate at its sampling moment. Therefore, the filter can be switched off in the ADC conversion phase to save power. To reduce the start-up time when the filter is activated again, a low-power auxiliary amplifier is used in the ADC conversion phase to maintain the filter output roughly. A 10-bit 10 MS/s SAR ADC with such a duty-cycled multiple feedback filter is fabricated in a 65 nm CMOS technology. The filter power has been reduced by 36% thanks to the proposed duty-cycled operation. The prototype achieves 8.3 ENOB and 59.3 dB SFDR at low input frequencies, and it has 40 dB suppression at the Nyquist input frequency, while consuming 91.1 µ W.

AB - This paper presents a co-design of a 10-bit SAR ADC and its front-end filter. Because the SAR ADC works as a discrete-time data converter, its input signal only needs to be accurate at its sampling moment. Therefore, the filter can be switched off in the ADC conversion phase to save power. To reduce the start-up time when the filter is activated again, a low-power auxiliary amplifier is used in the ADC conversion phase to maintain the filter output roughly. A 10-bit 10 MS/s SAR ADC with such a duty-cycled multiple feedback filter is fabricated in a 65 nm CMOS technology. The filter power has been reduced by 36% thanks to the proposed duty-cycled operation. The prototype achieves 8.3 ENOB and 59.3 dB SFDR at low input frequencies, and it has 40 dB suppression at the Nyquist input frequency, while consuming 91.1 µ W.

KW - duty cycle

KW - low power

KW - multiple feedback filter

KW - SAR ADC

U2 - 10.1109/NEWCAS57931.2023.10198037

DO - 10.1109/NEWCAS57931.2023.10198037

M3 - Conference contribution

AN - SCOPUS:85168551657

SP - 1

EP - 5

BT - 2023 21st IEEE Interregional NEWCAS Conference (NEWCAS)

PB - Institute of Electrical and Electronics Engineers

T2 - 21st IEEE Interregional NEWCAS Conference, NEWCAS 2023

Y2 - 26 June 2023 through 28 June 2023

ER -

A 10-bit 10 MS/s SAR ADC with Duty-Cycled Multiple Feedback Filter

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