Name
Title | ||
|---|---|---|
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 |
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 $(\sim 200\mathrm {V})$ 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 $6 \times 6$ 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. |
Year | DOI | Venue |
|---|---|---|
2019 | 10.1109/ISSCC.2019.8662531 | 2019 IEEE International Solid- State Circuits Conference - (ISSCC) |
DocType | ISBN | Citations |
Conference | 978-1-5386-8531-0 | 1 |
PageRank | References | Authors |
0.36 | 0 | 7 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Jihee Lee | 1 | 21 | 5.25 |
| Kyoung-Rog Lee | 2 | 21 | 4.16 |
| Benjamin E. Eovino | 3 | 5 | 0.78 |
| Jeong Hoan Park | 4 | 13 | 5.84 |
| Liwei Lin | 5 | 122 | 28.76 |
| Hoi-Jun Yoo | 6 | 1574 | 226.79 |
| Jerald Yoo | 7 | 11 | 3.28 |