Title
A 155µW 88-dB DR discrete-time ΔΣ modulator for digital hearing aid applications
Abstract
In this paper we present a low-power switched-capacitor ΔΣ modulator for digital hearing-aid applications. The circuit adopts a novel summing successive approximation (SAR) block to perform multi-bit quantization together with the analog addition that is required in feed-forward topologies. The use of passive addition and SAR operation helps in reducing the complexity and power consumption of the modulator. The prototype is implemented in a 180 nm CMOS technology and measurements demonstrate 88 dB of dynamic range in a 10 kHz band while consuming 155μW from a 1.8V supply.
Year
DOI
Venue
2012
10.1109/BioCAS.2012.6418450
Biomedical Circuits and Systems Conference
Keywords
DocType
ISBN
cmos integrated circuits,biomedical electronics,discrete time systems,feedforward,hearing aids,low-power electronics,modulators,power consumption,switched capacitor networks,cmos technology,analog addition,digital hearing aid applications,discrete-time δς modulator,feed-forward topology,frequency 10 khz,low-power switched capacitor δς modulator,multibit quantization,power 155 muw,size 180 nm,summing successive approximation,voltage 1.8 v,low power electronics
Conference
978-1-4673-2292-8
Citations 
PageRank 
References 
0
0.34
5
Authors
7