A 590 μw, 106.6 dB SNDR, 24 kHz BW Continuous-Time Zoom ADC with a Noise-Shaping 4-bit SAR ADC

Shubham Mehrotra; Efraim Eland; Shoubhik Karmakar; Angqi Liu; Burak Gonen; Muhammed Bolatkale; Robert Van Veldhoven; Kofi A.A. Makinwa

doi:10.1109/ESSCIRC55480.2022.9911295

A 590 μw, 106.6 dB SNDR, 24 kHz BW Continuous-Time Zoom ADC with a Noise-Shaping 4-bit SAR ADC

Shubham Mehrotra^*, Efraim Eland, Shoubhik Karmakar, Angqi Liu, Burak Gonen, Muhammed Bolatkale, Robert Van Veldhoven, Kofi A.A. Makinwa

^*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

4 Citations (Scopus)

40 Downloads (Pure)

Abstract

This paper presents a continuous-Time zoom ADC for audio applications. It combines a 4-bit noise-shaping coarse SAR ADC and a fine delta-sigma modulator with a tail-resistor linearized OTA for improved linearity, energy efficiency, and handling of out-of-band interferers compared to previous designs. In 160 nm CMOS, the prototype chip occupies 0.36 mm2, achieves 107.2 dB SNR, 106.6 dB SNDR, and 107.3 dB dynamic range in a 24 kHz bandwidth while consuming 590 μW from a 1.8 V supply. This translates into a Schreier figure-of-merit (FoMs) of 183.4 dB and a FoMSNDR of 182.7 dB.

Original language	English
Title of host publication	ESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	253-256
Number of pages	4
ISBN (Electronic)	9781665484947
DOIs	https://doi.org/10.1109/ESSCIRC55480.2022.9911295
Publication status	Published - 2022
Event	48th IEEE European Solid State Circuits Conference, ESSCIRC 2022 - Milan, Italy Duration: 19 Sept 2022 → 22 Sept 2022

Publication series

Name	ESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings

Conference

Conference	48th IEEE European Solid State Circuits Conference, ESSCIRC 2022
Country/Territory	Italy
City	Milan
Period	19/09/22 → 22/09/22

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

A/D conversion
audio analog to digital converter (ADC)
continuous-Time delta-sigma ADC
dynamic zoom ADC
high linearity operational transconductance amplifier (OTA)
low-power circuits
noise-shaping SAR ADC

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/ESSCIRC55480.2022.9911295

A_590_W_106.6_dB_SNDR_24_kHz_BW_Continuous-Time_Zoom_ADC_with_a_Noise-Shaping_4-bit_SAR_ADCFinal published version, 1.31 MB

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Mehrotra, S., Eland, E., Karmakar, S., Liu, A., Gonen, B., Bolatkale, M., Van Veldhoven, R., & Makinwa, K. A. A. (2022). A 590 μw, 106.6 dB SNDR, 24 kHz BW Continuous-Time Zoom ADC with a Noise-Shaping 4-bit SAR ADC. In ESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings (pp. 253-256). (ESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings). Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ESSCIRC55480.2022.9911295

Mehrotra, Shubham ; Eland, Efraim ; Karmakar, Shoubhik et al. / A 590 μw, 106.6 dB SNDR, 24 kHz BW Continuous-Time Zoom ADC with a Noise-Shaping 4-bit SAR ADC. ESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings. Institute of Electrical and Electronics Engineers (IEEE), 2022. pp. 253-256 (ESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings).

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title = "A 590 μw, 106.6 dB SNDR, 24 kHz BW Continuous-Time Zoom ADC with a Noise-Shaping 4-bit SAR ADC",

abstract = "This paper presents a continuous-Time zoom ADC for audio applications. It combines a 4-bit noise-shaping coarse SAR ADC and a fine delta-sigma modulator with a tail-resistor linearized OTA for improved linearity, energy efficiency, and handling of out-of-band interferers compared to previous designs. In 160 nm CMOS, the prototype chip occupies 0.36 mm2, achieves 107.2 dB SNR, 106.6 dB SNDR, and 107.3 dB dynamic range in a 24 kHz bandwidth while consuming 590 μW from a 1.8 V supply. This translates into a Schreier figure-of-merit (FoMs) of 183.4 dB and a FoMSNDR of 182.7 dB. ",

keywords = "A/D conversion, audio analog to digital converter (ADC), continuous-Time delta-sigma ADC, dynamic zoom ADC, high linearity operational transconductance amplifier (OTA), low-power circuits, noise-shaping SAR ADC",

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Mehrotra, S, Eland, E, Karmakar, S, Liu, A, Gonen, B, Bolatkale, M, Van Veldhoven, R & Makinwa, KAA 2022, A 590 μw, 106.6 dB SNDR, 24 kHz BW Continuous-Time Zoom ADC with a Noise-Shaping 4-bit SAR ADC. in ESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings. ESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings, Institute of Electrical and Electronics Engineers (IEEE), pp. 253-256, 48th IEEE European Solid State Circuits Conference, ESSCIRC 2022, Milan, Italy, 19/09/22. https://doi.org/10.1109/ESSCIRC55480.2022.9911295

A 590 μw, 106.6 dB SNDR, 24 kHz BW Continuous-Time Zoom ADC with a Noise-Shaping 4-bit SAR ADC. / Mehrotra, Shubham; Eland, Efraim; Karmakar, Shoubhik et al.
ESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings. Institute of Electrical and Electronics Engineers (IEEE), 2022. p. 253-256 (ESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings).

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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AU - Mehrotra, Shubham

AU - Eland, Efraim

AU - Karmakar, Shoubhik

AU - Liu, Angqi

AU - Gonen, Burak

AU - Bolatkale, Muhammed

AU - Van Veldhoven, Robert

AU - Makinwa, Kofi A.A.

N1 - Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

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N2 - This paper presents a continuous-Time zoom ADC for audio applications. It combines a 4-bit noise-shaping coarse SAR ADC and a fine delta-sigma modulator with a tail-resistor linearized OTA for improved linearity, energy efficiency, and handling of out-of-band interferers compared to previous designs. In 160 nm CMOS, the prototype chip occupies 0.36 mm2, achieves 107.2 dB SNR, 106.6 dB SNDR, and 107.3 dB dynamic range in a 24 kHz bandwidth while consuming 590 μW from a 1.8 V supply. This translates into a Schreier figure-of-merit (FoMs) of 183.4 dB and a FoMSNDR of 182.7 dB.

AB - This paper presents a continuous-Time zoom ADC for audio applications. It combines a 4-bit noise-shaping coarse SAR ADC and a fine delta-sigma modulator with a tail-resistor linearized OTA for improved linearity, energy efficiency, and handling of out-of-band interferers compared to previous designs. In 160 nm CMOS, the prototype chip occupies 0.36 mm2, achieves 107.2 dB SNR, 106.6 dB SNDR, and 107.3 dB dynamic range in a 24 kHz bandwidth while consuming 590 μW from a 1.8 V supply. This translates into a Schreier figure-of-merit (FoMs) of 183.4 dB and a FoMSNDR of 182.7 dB.

KW - A/D conversion

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KW - continuous-Time delta-sigma ADC

KW - dynamic zoom ADC

KW - high linearity operational transconductance amplifier (OTA)

KW - low-power circuits

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DO - 10.1109/ESSCIRC55480.2022.9911295

M3 - Conference contribution

AN - SCOPUS:85141502543

T3 - ESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings

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BT - ESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings

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ER -

Mehrotra S, Eland E, Karmakar S, Liu A, Gonen B, Bolatkale M et al. A 590 μw, 106.6 dB SNDR, 24 kHz BW Continuous-Time Zoom ADC with a Noise-Shaping 4-bit SAR ADC. In ESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings. Institute of Electrical and Electronics Engineers (IEEE). 2022. p. 253-256. (ESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings). doi: 10.1109/ESSCIRC55480.2022.9911295

A 590 μw, 106.6 dB SNDR, 24 kHz BW Continuous-Time Zoom ADC with a Noise-Shaping 4-bit SAR ADC

Abstract

Publication series

Conference

Bibliographical note

Keywords

UN SDGs

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