A DSP-based hearing instrument IC

Author

Neuteboom, Harry ; Kup, Ben M J ; Janssens, Mark

Author_Institution

Integrated Circuit Lab., Philips Consumer Electron., Eindhoven, Netherlands

Volume

32

Issue

11

fYear

1997

fDate

11/1/1997 12:00:00 AM

Firstpage

1790

Lastpage

1806

Abstract

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

Keywords

CMOS integrated circuits; automatic gain control; data conversion; digital signal processing chips; hearing aids; telecontrol; 0.8 mum; 0.9 V; 2 mW; AD/DA converters; DSP-based hearing instrument; digital signal processing IC; dynamic range; infrared remote control receiver; low-threshold CMOS process; oversampling converters; supply voltages; Auditory system; Batteries; Digital integrated circuits; Digital signal processing; Digital signal processing chips; Digital signal processors; Dynamic range; Instruments; Optical receivers; Voltage;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.641702

Filename

641702