A NOVEL MICROPHONE PREAMPLIFIER FOR USE IN HEARING-AIDS

被引：3

作者：

PLUYGERS, AC

机构：

[1] Department of Electrical Engineering, Electronics Research Laboratory, Delft University of Technology, CD Delft, 2628

来源：

ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING | 1993年 / 3卷 / 02期

关键词：

D O I：

10.1007/BF01239369

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

A novel design for a microphone preamplifier for application in hearing aids is presented. The amplifier operates at a supply voltage of 1-1.3 V, the current drain is 70 muA. The maximum sound level allowed is more than 105 dB SPL, with a typical noise level of 28 dB SPL. Instead of the usual voltage sensing, current sensing of the microphone is used. The amplifier consists of a fully balanced charge-to-current amplifier with no external components required. A semicustom version of the design has been integrated in a standard BIMOS process.

引用

页码：113 / 118

页数：6

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