A DSP-based hearing instrument IC

被引:71
|
作者
Neuteboom, H [1 ]
Kup, BMJ [1 ]
Janssens, M [1 ]
机构
[1] PHILIPS CONSUMER ELECT,INT TECHNOL CTR LEUVEN,ASA LABS,B-3001 LOUVAIN,BELGIUM
关键词
analog-digital conversion; CMOS integrated circuits; DC-DC power conversion; digital-analog conversion; digital signal professors; low power; low voltage; sigma-delta modulation;
D O I
10.1109/4.641702
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
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 mm(2) in a low-threshold 0.8-mu m CMOS process.
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页码:1790 / 1806
页数:17
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