Design of a low power time-gain-compensation amplifier for a 2D piezoelectric ultrasound transducer

Author

Yao, J. ; Yu, Z. ; Pertijs, M.A.P. ; Meijer, G.C.M. ; Lancée, C.T. ; Bosch, J.G. ; de Jong, N.

Author_Institution

Fudan-TU Delft Int. Sch. of Microelectron., Fudan Univ., Shanghai, China

fYear

2010

fDate

11-14 Oct. 2010

Firstpage

841

Lastpage

844

Abstract

In this paper, a programmable time-gain compensation amplifier dedicated to a 2D piezoelectric ultrasound transducer is presented. It uses an open-loop amplifier structure consisting of a voltage-to-current converter and a current-to-voltage converter. The circuit has been designed in a standard 0.35-μm CMOS process. Simulation and measurement results show that gains of 0dB, 12dB, 26dB and 40dB can be achieved for input signals centered at 6MHz with 80dB dynamic range (100μV to 1V). The measured gain errors at 6MHz are below 1dB for all gain settings. The amplifier consumes only 130μW when driving a 250fF load.

Keywords

CMOS analogue integrated circuits; amplifiers; convertors; low-power electronics; piezoelectric transducers; ultrasonic transducers; 2D piezoelectric ultrasound transducer; CMOS process; current-to-voltage converter; frequency 6 MHz; open-loop amplifier structure; programmable time-gain-compensation amplifier; size 0.35 mum; voltage-to-current converter; Acoustics; Dynamic range; Gain measurement; Resistors; Transconductance; Transducers; Ultrasonic imaging; 2D piezoelectric transducer; Time-gain-compensation amplifier; low-power analog circuit;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium (IUS), 2010 IEEE

Conference_Location

San Diego, CA

ISSN

1948-5719

Print_ISBN

978-1-4577-0382-9

Type

conf

DOI

10.1109/ULTSYM.2010.5935775

Filename

5935775