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A DSP-based hearing instrument IC

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3 Author(s)
H. Neuteboom ; Integrated Circuit Lab., Philips Consumer Electron., Eindhoven, Netherlands ; B. M. J. Kup ; M. Janssens

This paper presents a digital signal processing IC, including AD/DA converters, for one-chip hearing instruments. An on-chip infrared remote control receiver is used to load a program Into the digital signal processor (DSP). The complete IC consumes 2 mW from a single cell battery and operates with supply voltages down to 0.9 V. The oversampling A/D and D/A converters show a dynamic range of 77 and 93 dBA, respectively. Only a few external capacitors are needed. The chip area is 35 mm2 in a low-threshold 0.8-μm CMOS process

Published in:

IEEE Journal of Solid-State Circuits  (Volume:32 ,  Issue: 11 )