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

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1 Citation (Scopus)

Abstract

This paper presents a compact analog front-end (AFE) circuit integrated with a 100µm-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 (ESSCIRC)
Subtitle of host publicationProceedings
Place of PublicationDanvers
PublisherIEEE
Pages163-166
Number of pages4
ISBN (Electronic)978-1-6654-3751-6
ISBN (Print)978-1-6654-3752-3
DOIs
Publication statusPublished - 2021
EventESSCIRC 2021: IEEE 47th European Solid State Circuits Conference - Virtual at Grenoble, France
Duration: 6 Sep 20219 Sep 2021
Conference number: 47th

Conference

ConferenceESSCIRC 2021
Country/TerritoryFrance
CityVirtual at Grenoble
Period6/09/219/09/21

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