Title :
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
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;
Conference_Titel :
Ultrasonics Symposium (IUS), 2010 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4577-0382-9
DOI :
10.1109/ULTSYM.2010.5935775
