DocumentCode
3082571
Title
All-MOS subthreshold log filters
Author
Graells, Francisco Serra
Author_Institution
Centro Nacional de Microelectron., Bellaterra, Spain
Volume
1
fYear
2001
fDate
6-9 May 2001
Firstpage
137
Abstract
This article proposes the use of nonlinear capacitors for log filtering thanks to the inner voltage dynamic range compression. The generalized principle is presented and an NMOS implementation for the capacitive element is proposed, which is compatible with existing low-voltage CMOS basic building blocks. The resulting all-MOS circuit technique is suitable to integrate such companding processing in digital VLSI technologies. Two examples for hearing aid circuits (i.e. 1 V supply) are given as demonstrators
Keywords
CMOS analogue integrated circuits; active filters; analogue processing circuits; compandors; data compression; hearing aids; low-power electronics; 1 V; NMOS implementation; companding processing; digital VLSI technologies; hearing aid circuits; inner voltage dynamic range compression; log filtering; low-voltage CMOS basic building blocks; Auditory system; CMOS technology; Capacitors; Circuits; Dynamic range; Filtering; Filters; MOS devices; Very large scale integration; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location
Sydney, NSW
Print_ISBN
0-7803-6685-9
Type
conf
DOI
10.1109/ISCAS.2001.921807
Filename
921807
Link To Document