Title :
A CMOS automatic gain control for hearing aid devices
Author :
Silva-Martinez, José ; Salcedo-Suner, J.
Author_Institution :
Inst. Nacional de Astrofisica, Opt. y Electron., Puebla, Mexico
Abstract :
In this paper a CMOS Automatic Gain Control (AGC) for Hearing aid devices is proposed. Monte Carlo analyses have shown total harmonic distortions below 0.5% and 0.6% for uncompressed and hard compressed operations, respectively. Dynamic Range is 69 dB while the THD is around 0.5%. Power consumption for the complete AGC is 54 μWatts under normal conditions and 162 μWatts for maximum compression operation. Attack and release times are below than 5 ms. The AGC is operated with ±1.5 supply voltages
Keywords :
CMOS analogue integrated circuits; Monte Carlo methods; automatic gain control; biomedical electronics; harmonic distortion; hearing aids; 1.5 V; 162 muW; 5 ms; 54 muW; CMOS automatic gain control; Monte Carlo analysis; compression; dynamic range; hearing aid; total harmonic distortion; Auditory system; CMOS technology; Envelope detectors; Gain control; Harmonic distortion; Operational amplifiers; Optical amplifiers; Topology; Transconductance; Voltage control;
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4455-3
DOI :
10.1109/ISCAS.1998.704420
