Patent ID: 8330199
Filing Date: 2012-12-11
Classification: H01L,H03F

Abstract:
1. A semiconductor device comprising: a plurality of resistor elements formed over respective substrate regions each via an insulating film, and coupled in series to each other; at least one bias wire electrically coupling one end of each of the plurality of resistor elements to one of the substrate regions corresponding thereto, an operational amplifier which amplifies a signal applied thereto; and input resistor which transmits the applied signal to an input of the operational amplifier; and a feedback resistor which feedbacks a signal from an output of the operational amplifier to the input, wherein the bias wire is arranged such that respective voltages between a pair of resistor elements of the plurality of resistor elements, which are coupled in series to each other, and the respective substrate regions corresponding thereto have opposite polarities, wherein the plurality of resistor elements include resistor elements forming the input resistor and resistor elements forming the feedback resistor, and wherein the bias wire is provided for each of a series-coupled resistor of the resistor elements forming the input resistor and a series-coupled resistor of the resistor elements forming the feedback resistor.