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.
Novaresi, L., Malcovati, P., Mazzanti, A., Bonizzoni, E., Terenzi, M., Ottaviani, S., et al. (2022). A PMUT Transceiver Front-End with 100-V TX Driver and Low-Noise Voltage Amplifier in BCD-SOI Technology. In ESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings (pp.221-224). 345 E 47TH ST, NEW YORK, NY 10017 USA : Institute of Electrical and Electronics Engineers Inc. [10.1109/ESSCIRC55480.2022.9911390].
A PMUT Transceiver Front-End with 100-V TX Driver and Low-Noise Voltage Amplifier in BCD-SOI Technology
Savoia A. S.
2022-01-01
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
