A Pitch-Matched Analog Front-End with Continuous Time-Gain Compensation for High-Density Ultrasound Transducer Arrays

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

Research output: Chapter/Conference proceedingConference proceedingAcademicpeer-review

1 Citation (Scopus)

Abstract

This paper presents a compact analog front-end (AFE) circuit integrated with a 100m-pitch 2D ultrasound transducer array for 3D imaging. To realize time-gain compensation, it consists of two variable gain stages, both of which employ a novel complementary current-steering network to realize continuously-variable gain. The first stage is a transimpedance amplifier with a hardware-sharing current-reuse input stage to save power and area. The second stage is a class-AB current amplifier. Per channel, the AFE occupies only 0.025 mm2, consumes 0.8 mW and achieves an input noise density of 1.31 pA/ \sqrt{\mathbf{H}} \mathbf{z}. The measured gain error of ±0.4 dB within a 36 dB overall gain range is 2.5 times better than the prior art.

Original languageEnglish
Title of host publicationESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages163-166
Number of pages4
ISBN (Electronic)9781665437479
DOIs
Publication statusPublished - 13 Sep 2021
Event47th IEEE European Solid State Circuits Conference, ESSCIRC 2021 - Virtual, Online, France
Duration: 6 Sep 20219 Sep 2021

Publication series

SeriesESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings

Conference

Conference47th IEEE European Solid State Circuits Conference, ESSCIRC 2021
Country/TerritoryFrance
CityVirtual, Online
Period6/09/219/09/21

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