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A 2.34μJ/scan Acoustic Power Scalable Charge-Redistribution pMUT Interface System with On-Chip Aberration Compensation for Portable Ultrasonic Applications

Cited 11 time in Web of Science Cited 14 time in Scopus
Authors

Tillak, Judyta; Akhbari, Sina; Shah, Nimesh; Radakovic, Ljubomir; Lin, Liwei; Yoo, Jerald

Issue Date
2016
Publisher
IEEE
Citation
2016 IEEE ASIAN SOLID-STATE CIRCUITS CONFERENCE (A-SSCC), pp.189-192
Abstract
A 1- to 8-ch scalable pMUT interface system with on-chip aberration compensation is presented for portable ultrasonic imaging applications. The system overcomes the necessity of area and power reduction for large ultrasonic arrays and presents the first hardware implementation on-chip calibration to improve the signal quality. The Charge Redistribution Transmitter (CR-TX) saves power by 32.8% while driving pMUT array at a wide range from 100 kHz to 5MHz. The CR-TX drives up to 500pF/channel load, which is 33x of the state-of-the-art ultrasonic driver reported to date. The on-chip adaptive beamformer supports five different media scans, has channel scalability and features the first demonstration of on-chip aberration compensation. The 8-ch system fabricated in 65nm CMOS occupies the core area of 700x1490 mu m, TX drives up to 6V while consuming 2.34 mu J/scan.
URI
https://hdl.handle.net/10371/200830
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부교수
  • College of Engineering
  • Department of Electrical and Computer Engineering
Research Area Biomedical Applications, Energy-Efficient Integrated Circuits

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