采用BCD-SOI技术的带有100v TX驱动器和低噪声电压放大器的PMUT收发器前端

ESSCIRC 2022- IEEE 48th European Solid State Circuits Conference (ESSCIRC) Pub Date : 2022-09-19 DOI:10.1109/ESSCIRC55480.2022.9911390

Lara Novaresi, P. Malcovati, A. Mazzanti, E. Bonizzoni, Marco Terenzi, Stefano Ottaviani, D. Ghisu, F. Quaglia, A. Savoia

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引用次数: 2

摘要

本文介绍了一种用于基于pmut的便携式超声医学成像探头的模拟收发器，工作频率为2-4 MHz。该收发器采用160纳米BCD-SOI技术制造，向超声换能器发送幅度高达±50 V的三电平脉冲序列，并通过接收器链收集后向散射回波，接收器链由具有可编程增益的低噪声电压放大器和缓冲器组成。该电路连接到PMUT，在最小增益下实现50 mV/kPa的RX灵敏度，在2.3 MHz时，输入参考噪声谱密度为$13\，\text{nV}/\sqrt{Hz}$，消耗5.4 mW。通过在水箱中进行声学测量获得的峰值RX灵敏度在2.3 MHz时为50 mV/kPa。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A PMUT Transceiver Front-End with 100-V TX Driver and Low-Noise Voltage Amplifier in BCD-SOI Technology

This paper presents an analog transceiver for PMUT-based portable ultrasound medical imaging probes, working in the 2–4 MHz frequency range. The transceiver, fabricated in a 160-nm BCD-SOI technology, delivers a three-level train of pulses with amplitude up to ±50 V to the ultrasound transducer and collects the back-scattered echoes with a receiver chain, consisting of a low-noise voltage amplifier with programmable gain and a buffer. The circuit, connected to a PMUT, achieves a RX sensitivity of 50 mV/kPa at minimum gain and an input-referred noise spectral density of $13\,\text{nV}/\sqrt{Hz}$ at 2.3 MHz, consuming 5.4 mW. The peak RX sensitivity, obtained with acoustic measurements in a water tank, is 50 mV/kPa at 2.3 MHz.

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ESSCIRC 2022- IEEE 48th European Solid State Circuits Conference (ESSCIRC)

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