Electronic device

Abstract

According to various embodiments, an electronic device is described, comprising a device input for connecting an analog signal source, an analog-to-digital converter having an analog-to-digital converter input connected to the device input, an alternating current source configured to supply an alternating current to the analog-to-digital-converter input and a detection circuit configured to store a reference for an amplitude of a voltage signal at the analog-to-digital-converter input caused by the alternating current, receive an output of the analog-to-digital converter, determine the amplitude of the voltage signal at the analog-to-digital-converter input caused by the alternating current by filtering the output of the analog-to-digital converter and output an error signal if the reference for the amplitude differs from the determined amplitude by more than a predetermined threshold.

Dependencies are inferred from the claim text.