Patent ID: 8994526
Filing Date: 2015-03-31
Classification: H03K,H04Q

Abstract:
1. A sensor interface module comprising; a comparator having a first comparator input, a second comparator input, and a comparator output; a current- or voltage-control element having a control terminal coupled to the comparator output and having an output configured to deliver a modulated current or modulated voltage signal to an output of the sensor interface module; a first feedback path that provides the modulated current or voltage signal from the output of the current- or voltage-control element to the first comparator input; a summation element having a first summation input, a second summation input, and a summation output, the summation output coupled to the second comparator input; a supply voltage module configured to provide a supply voltage signal to the first summation input; and a second feedback path coupling the comparator output to the second summation input.