A Very Low Offset Preamplifier for Voltage Measurements in the <formula formulatype="inline"><tex Notation="TeX">$\mu\hbox{V}$</tex></formula> Range


A new topology for the implementation of a very low offset voltage preamplifier is presented. The new topology employs a time-varying resistance as a probe for detecting the sign and magnitude of the equivalent input offset of an operational amplifier in a series-shunt feedback configuration and allows for continuously correcting the offset voltage by means… (More)
DOI: 10.1109/TIM.2009.2022447


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