A 21nV/√Hz Chopper-Stabilized Multi-path Current-Feedback Instrumentation Amplifier with 2μV Offset

Conference paper (2010)

Authors

Q. Fan Electronic Instrumentation - EEMCS
J.H. Huijsing Electronic Instrumentation - EEMCS
K.A.A. Makinwa Electronic Instrumentation - EEMCS
Research Group
Electronic Instrumentation (EEMCS) (TU Delft)
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Published Date

2010

Language

English

Reuse Rights

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Electronic Instrumentation

Abstract

This paper describes a chopper-stabilized current-feedback instrumentation amplifier (CFIA) with a ripple-reduction loop (RRL). A smooth 1 st -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.