DocumentCode
3342839
Title
A CMOS preamplifier for electret microphones
Author
Silva-Martínez, José ; Alcedo-Suner, J.
Author_Institution
Inst. Nacional de Astrofisica, Opt. y Electron., Puebla, Mexico
Volume
3
fYear
1995
fDate
30 Apr-3 May 1995
Firstpage
1868
Abstract
In this paper a CMOS preamplifier for capacitive sources is presented. The 20 dB gain preamplifier achieves a dynamic range of 54 dB while the total harmonic distortion is below -50 dB. Monte Carlo analyses have shown output random offset voltages below 40 mvolts. The power consumption of the proposed preamplifier is 24 μwatts. All this has been achieved due to the use of a novel resistor and linearized OTAs
Keywords
CMOS analogue integrated circuits; Monte Carlo methods; audio-frequency amplifiers; electrets; microphones; preamplifiers; 20 dB; 24 muW; 40 mV; CMOS preamplifier; Monte Carlo analyses; capacitive sources; dynamic range; electret microphones; harmonic distortion; linearized OTAs; output random offset voltages; power consumption; resistor; Dynamic range; Electrets; Energy consumption; Gain; Microphones; Monte Carlo methods; Preamplifiers; Resistors; Total harmonic distortion; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 1995. ISCAS '95., 1995 IEEE International Symposium on
Conference_Location
Seattle, WA
Print_ISBN
0-7803-2570-2
Type
conf
DOI
10.1109/ISCAS.1995.523781
Filename
523781
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