A 1.1-V 270-μA mixed-signal hearing aid chip

被引：43

作者：

Gata, DG ^{[1
]}

Sjursen, W

Hochschild, JR

Fattaruso, JW

Fang, LY

Iannelli, GR

Jiang, ZN

Branch, CM

Holmes, JA

Skorcz, ML

Petilli, EM

Chen, SY

Wakeman, G

Preves, DA

Severin, WA

机构：

[1] Texas Instruments Inc, Dallas, TX 75266 USA

[2] Songbird Hearing Inc, Cranbury, NJ 08512 USA

[3] Sanoff Corp, Princeton, NJ 08543 USA

[4] Intrinsix, Pittford, NY 14534 USA

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2002年 / 37卷 / 12期

关键词：

analog-to-digital conversion; digital filters; digital signal processing; digital-to-analog conversion; gain compression; hearing aid circuits; limiting; low power; low voltage; ring oscillator;

D O I：

10.1109/JSSC.2002.804328

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 single-chip mixed-signal IC for a hearing aid system. The IC consumes 270 muA of supply current at a 1.1-V battery voltage. The presented circuit and architectural design techniques reduce the total IC power to 297 muW, a level where up to 70 days of lifetime is achieved at 10 h/day for a small zinc-air battery. The measured input referred noise for the entire channel is 2.8 muVrms and the average THD in the nominal operating region is 0.02%. The jitter for the on-board ring oscillator is 147 ps rms. The chip area is 12 mm(2) in a 0.6-mum 3.3-V mixed-signal CMOS process.

引用

页码：1670 / 1678

页数：9

共 9 条

[1]

FATTARUSO JW, 2002, IEEE INT SOL STAT CI

[2] Jitter and phase noise in ring oscillators [J].