Self-biased charge sampling amplifier in 90nm CMOS for medical ultrasound imaging

Authors:
Linga Reddy Cenkeramaddi;Tajeshwar Singh;Trond Ytterdal
Affiliations:
Norwegian University of Science and Technology, Trondheim, Norway;Norwegian University of Science and Technology, Trondheim, Norway;Norwegian University of Science and Technology, Trondheim, Norway
Venue:
Proceedings of the 17th ACM Great Lakes symposium on VLSI
Year:
2007

Citing 1
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Abstract

In this paper, we present the analysis and design of a self-biased single-ended charge sampling amplifier (CSA) in 90nm CMOS for catheter based intravenous ultrasound imaging applications. The proposed CSA is based on a 1V single-ended CMOS inverter-based cascode amplifier. The amplifier achieves a DC gain of 43.7 dB and a unity gain frequency of 1.37 GHz at a power consumption of 385 μW at 37°C - nominal temperature of human body with typical-typical (TT) models defined in the 90nm CMOS technology used for this design. Performance of the self-biased CSA is studied by connecting a single Capacitive Micro machined Ultrasound Transducer (CMUT) to it.