A Pitch-Matched Transceiver ASIC for 3D Ultrasonography with Micro-Beamforming ADCs based on Passive Boxcar Integration and a Multi-Level Datalink

P. Guo*, Z. Y. Chang, E. Noothout, H. J. Vos, J. G. Bosch, N. De Jong, M. D. Verweij, M. A.P. Pertijs

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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Abstract

This paper presents a pitch-matched transceiver ASIC integrated with a 2-D transducer array for a wearable ultrasound device for transfontanelle ultrasonography. The ASIC combines 8-fold multiplexing, 4-channel micro-beamforming (μ BF) and sub-array-level digitization to achieve a 128-fold channel-count reduction. The μ BF is based on passive boxcar integration and interfaces with a 10-bit 40 MS/s SAR ADC in the charge domain, thus obviating the need for explicit anti-alias filtering and power-hungry ADC drivers. A compact and low-power reference generator employs an area-efficient MOS capacitor as a reservoir to quickly set a reference for the ADC in the charge domain. A low-power multi-level data link concatenates outputs of four ADCs, leading to an aggregate 3.84 Gb/s data rate. Per channel, the RX circuit consumes 2.06 mW and occupies 0.05 mm2.

Original languageEnglish
Title of host publication2023 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2023
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISBN (Electronic)9784863488069
DOIs
Publication statusPublished - 2023
Event2023 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2023 - Kyoto, Japan
Duration: 11 Jun 202316 Jun 2023

Publication series

NameDigest of Technical Papers - Symposium on VLSI Technology
Volume2023-June
ISSN (Print)0743-1562

Conference

Conference2023 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2023
Country/TerritoryJapan
CityKyoto
Period11/06/2316/06/23

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.

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