A Front-End ASIC With High-Voltage Transmit Switching and Receive Digitization for 3-D Forward-Looking Intravascular Ultrasound Imaging

Journal article (2018)

Authors

M. Tan Electronic Instrumentation - EEMCS
C. Chen Electronic Instrumentation - EEMCS
M.A.P. Pertijs Electronic Instrumentation - EEMCS
Z. Chen Electronic Instrumentation - EEMCS
Jovana Janjic Erasmus MC
Z.Y. Chang Electronic Instrumentation - EEMCS
G. van Soest Erasmus MC
M.D. Verweij , Erasmus MC
N. de Jong , Erasmus MC
Research Group
Electronic Instrumentation (EEMCS) (TU Delft)
Copyright: © 2018 M. Tan, C. Chen, Z. Chen, Jovana Janjic, V. Daeichin, Z.Y. Chang, E.C. Noothout, G. van Soest, M.D. Verweij, N. de Jong, M.A.P. Pertijs
DOI
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https://doi.org/10.1109/JSSC.2018.2828826
Imaging Transducers Impedance Receive digitization Wires Switches Ultrasonic imaging Catheters Cable-count reduction High-voltage (HV) switching Intravascular ultrasound (IVUS) imaging Piezoelectrical transducer
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Published Date

2018

Language

English

Reuse Rights

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Electronic Instrumentation

Abstract

This paper presents an area- and power-efficient application-specified integrated circuit (ASIC) for 3-D forward-looking intravascular ultrasound imaging. The ASIC is intended to be mounted at the tip of a catheter, and has a circular active area with a diameter of 1.5 mm on the top of which a 2-D array of piezoelectric transducer elements is integrated. It requires only four micro-coaxial cables to interface 64 receive (RX) elements and 16 transmit (TX) elements with an imaging system. To do so, it routes high-voltage (HV) pulses generated by the system to selected TX elements using compact HV switch circuits, digitizes the resulting echo signal received by a selected RX element locally, and employs an energy-efficient load-modulation datalink to return the digitized echo signal to the system in a robust manner. A multi-functional command line provides the required sampling clock, configuration data, and supply voltage for the HV switches. The ASIC has been realized in a 0.18-?m HV CMOS technology and consumes only 9.1 mW. Electrical measurements show 28-V HV switching and RX digitization with a 16-MHz bandwidth and 53-dB dynamic range. Acoustical measurements demonstrate successful pulse transmission and reception. Finally, a 3-D ultrasound image of a three-needle phantom is generated to demonstrate the imaging capability.