DocumentCode
1194265
Title
A scalable high-performance switched-capacitor filter
Author
Wang, Chorng-Kuang ; Castello, Rinaldo ; Gray, Paul R.
Volume
33
Issue
2
fYear
1986
fDate
2/1/1986 12:00:00 AM
Firstpage
167
Lastpage
174
Abstract
Switched-capacitor filters tend to display reduced performance when implemented at reduced feature size because of higher 
and 
noise, and reduced operational amplifier gain and swing. This paper describes some circuit solutions to certain performance degradations associated with technology scaling, including chopper stabilization, and class AB differential operational amplifier architecture. An experimental fifth order elliptic PCM low-pass filter, using 3 
CMOS technology, achieved an area of 200 
per pole. Typical measured results for a 
2.5-V power supply are: a dynamic range of 87 dB, a power supply rejection ratio (PSRR) of 40 dB over 1-MHz range.
and noise, and reduced operational amplifier gain and swing. This paper describes some circuit solutions to certain performance degradations associated with technology scaling, including chopper stabilization, and class AB differential operational amplifier architecture. An experimental fifth order elliptic PCM low-pass filter, using 3 CMOS technology, achieved an area of 200 per pole. Typical measured results for a 2.5-V power supply are: a dynamic range of 87 dB, a power supply rejection ratio (PSRR) of 40 dB over 1-MHz range.Keywords
CMOS analog integrated circuits; CMOS integrated circuits, analog; Filter noise; Low-pass filters; Switched-capacitor filters; CMOS technology; Choppers; Circuit noise; Degradation; Displays; Filters; Noise reduction; Operational amplifiers; Performance gain; Power supplies;
fLanguage
English
Journal_Title
Circuits and Systems, IEEE Transactions on
Publisher
ieee
ISSN
0098-4094
Type
jour
DOI
10.1109/TCS.1986.1085890
Filename
1085890
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