DocumentCode
439197
Title
A CMOS chopper opamp with integrated low-pass filter
Author
Bakker, A. ; Huijsing, J.H.
Author_Institution
Delft University of Technology, Delft, Netherlands
fYear
1997
fDate
16-18 Sept. 1997
Firstpage
200
Lastpage
203
Abstract
A CMOS chopper opamp has been realized. The low-pass filter, which is necessary to remove modulated offset and noise components, is implemented as a sample-and-hold filter, which has the advantages of not limiting the band width and easy integration. The opamp features an offset of 30 µV, noise of 300nV/√Hz, 120dB gain and 75 µW power consumption. The opamp has better trade-offs for offset, noise, chip area and power consumption than traditional auto-zeroed opamps.
Keywords
Choppers; Energy consumption; Low pass filters;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid-State Circuits Conference, 1997. ESSCIRC '97. Proceedings of the 23rd European
Conference_Location
Southampton, UK
Type
conf
Filename
1470898
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