Title :
Development of integrated preamplifier for high frequency ultrasonic transducer
Author :
Choi, Hojong ; Li, Xiang ; Lau, Sien-Ting ; Hu, ChangHong ; Zhou, Qifa ; Shung, K. Kirk
Author_Institution :
NIH Resource Center for Med. Ultrasonic Transducer Technol. & Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
This paper describes the design of an integrated circuit consisting of a preamplifier with Sallen-Key Butterworth filter for direct interfacing to a high frequency ultrasonic transducer. This preamplifier was fabricated with the IBM 7WL process. Sallen-key filter is used to increase the gain of the front-end circuit. The measured voltage gain of one of the selected front end circuits for the preamplifier with Sallen-Key filter is 35.61dB at 100MHz with a bandwidth of 87.3% and 8.58mW DC power consumption. Pulse-echo responses and wire-phantom images with ultrasonic transducers have been acquired with the front end circuit.
Keywords :
Butterworth filters; biomedical electronics; biomedical transducers; biomedical ultrasonics; integrated circuit design; phantoms; preamplifiers; ultrasonic transducers; IBM 7WL; Sallen-Key Butterworth filter; frequency 100 MHz; front-end circuit; high frequency ultrasonic transducer; integrated preamplifier; power 8.58 mW; pulse-echo response; ultrasonic transducers; wire-phantom images; Capacitance; Heterojunction bipolar transistors; MOSFET circuits; Noise; Preamplifiers; Transducers; Ultrasonic transducers; Electrical Impedance Matching; Front-End Circuits; Integrated Preamplifier; Sallen-Key Butterworth Filter; Ultrasonic Transducer;
Conference_Titel :
Ultrasonics Symposium (IUS), 2010 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4577-0382-9
DOI :
10.1109/ULTSYM.2010.5935544
