Title :
Measurement of small resistance variations using ΣΔ technique
Author :
Gal, S. ; Cathebras, G. ; Bertrand, Y.
Author_Institution :
LIRMM, Montpellier, France
fDate :
8/6/1998 12:00:00 AM
Abstract :
A novel circuit is proposed for measuring small resistance variations. The method uses a ΣΔ modulator to balance a current controlled resistor bridge. This allows direct analogue to digital conversion without using a high precision instrumentation amplifier
Keywords :
bridge instruments; electric resistance measurement; sigma-delta modulation; ΣΔ modulator; analogue to digital conversion; current controlled resistor bridge; resistance measurement;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19981097
