Design of a low power time-gain-compensation amplifier for a 2Dpiezoelectric ultrasound transducer
In this paper, a programmable time-gain-compensation amplifier dedicated toa 2D piezoelectric ultrasound transducer is presented. It uses an open-loopamplifier structure consisting of a voltage-to-current converter and acurrent-to-voltage converter. The circuit has been designed in a standard0.35-μm CMOS process. Simulation and measurement results show that gains of0dB, 12dB, 26dB and 40dB can be achieved for input signals centered at 6MHz with80dB dynamic range (100V to 1V). The measured gain errors at 6MHz are below 1dBfor all gain settings. The amplifier consumes only 130W when driving a 250fFload.
|2D piezoelectrictransducer, low-power analog circuit, Time-gain-compensation amplifier|
|Organisation||Department of Cardio-Thoracic Surgery|
Yao, J, Yu, Z, Pertijs, M.A.P, Meijer, G.C.M, Lancée, C.T, Bosch, J.G, & de Jong, N. (2010). Design of a low power time-gain-compensation amplifier for a 2Dpiezoelectric ultrasound transducer. doi:10.1109/ULTSYM.2010.5935775