DocumentCode :
1889882
Title :
A 21nV/√Hz chopper-stabilized multipath current-feedback instrumentation amplifier with 2µV offset
Author :
Qinwen Fan ; Huijsing, J.H. ; Makinwa, Kofi A. A.
Author_Institution :
Delft Univ. of Technol., Delft, Netherlands
fYear :
2010
fDate :
7-11 Feb. 2010
Firstpage :
80
Lastpage :
81
Abstract :
This paper describes a chopper-stabilized current-feedback instrumentation amplifier (CFIA) with a ripple-reduction loop (RRL). A smooth 1st-order response is obtained by embedding the RRL in a multipath structure to bury the notch caused by the RRL. The CFIA achieves 2 μV offset, 21 nV/√(VHz) with NEF of 9.6. The CFIA can also be configured as an opamp which achieves 2× reduction in NEF.
Keywords :
choppers (circuits); feedback amplifiers; operational amplifiers; chopper-stabilized multipath current-feedback instrumentation amplifier; multipath structure; opamp; ripple-reduction loop; Feedback; Filters; Frequency; Gain measurement; Impedance; Instruments; Joining processes; Stability; Transconductors; Transfer functions;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2010 IEEE International
Conference_Location :
San Francisco, CA
ISSN :
0193-6530
Print_ISBN :
978-1-4244-6033-5
Type :
conf
DOI :
10.1109/ISSCC.2010.5434041
Filename :
5434041
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=1889882
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