Patent ID: 8242801

Claim:
A circuit arrangement with a semiconductor body with an input circuit arrangement, comprising: an impedance connected at a first terminal of the impedance to an input of the input circuit arrangement; and the input circuit arrangement comprising: the input, which is connected to the first terminal of the impedance, configured to receive an input signal; a comparator, which is connected to the input of the input circuit arrangement, configured to deliver an activation signal at an output as a function of a comparison of the input signal with an adjustable threshold; and an evaluation circuit, which is connected via a first input to the input of the input circuit arrangement and for evaluation circuit activation to the output of the comparator via a second input of the evaluation circuit and which is configured to evaluate the value of the impedance, wherein the evaluation circuit is switched as a function of the activation signal into a switched-on operating state or into a switched-off operating state.