Publications

Detailed Information

11.1 A 5.37mW/Channel Pitch-Matched Ultrasound ASIC with Dynamic-Bit-Shared SAR ADC and 13.2V Charge-Recycling TX in Standard CMOS for Intracardiac Echocardiography

Cited 0 time in Web of Science Cited 31 time in Scopus
Authors

Lee, Jihee; Lee, Kyoung-Rog; Eovino, Benjamin E.; Park, Jeong Hoan; Lin, Liwei; Yoo, Hoi-Jun; Yoo, Jerald

Issue Date
2019
Publisher
Institute of Electrical and Electronics Engineers Inc.
Citation
Digest of Technical Papers - IEEE International Solid-State Circuits Conference, Vol.2019-February, pp.190-192
Abstract
Intracardiac echocardiography (ICE) is an ultrasound sonogram that visualizes the anatomical structure of the heart in real time, with a mm-scale catheter inserted through the intracardiac vessels, and guides surgical intervention for atrial septal defect (ASD) closure. To achieve high-quality medical imaging, an ICE system must meet stringent power consumption requirements with low-noise operation. Since an ASIC and ultrasound transducers are tightly bonded through flip-chip or direct integration, an ultrasound unit TRX channel must be pitch-matched to each transducer channel [1], [2]. A piezoelectric Micro-machined Ultrasound Transducer (pMUT) is a suitable ultrasound transducer for implantable sensor applications, since it does not need high (∼ 200 {V}) bias that is a must in capacitive MUTs (cMUT) [3]. However, pMUT devices suffer from process variation, which leads to low image quality, and to date, no work addresses this issue for both TX/RX in real time. To meet all these requirements at once, we present a 6 × 6 TRX pitch-matched pMUT ASIC with a standard CMOS-compatible 13.2V HV pulser, on-chip per-pixel calibration scheme, and a Dynamic Bit-Shared (DBS) ADC for portable ICE applications.
ISSN
0193-6530
URI
https://hdl.handle.net/10371/200818
DOI
https://doi.org/10.1109/ISSCC.2019.8662531
Files in This Item:
There are no files associated with this item.
Appears in Collections:

Related Researcher

Yoo, Jerald Image

Yoo, Jerald유담
부교수
  • College of Engineering
  • Department of Electrical and Computer Engineering
Research Area Biomedical Applications, Energy-Efficient Integrated Circuits

Altmetrics

Item View & Download Count

  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Share