Integrated circuit i.e. application specific integrated circuit, for voltage monitoring in printed circuit board, has voltage source for outputting reference voltage, and output pin outputting diagnostic signal based on evaluation signal

摘要

The circuit (1) has a voltage input pin (2) for applying a measuring voltage (U1) to be monitored, and a reference voltage source (8) for outputting a reference voltage (Ubg). An evaluation device (16) receives a digital signal (S1) of an analog-to-digital converter device (11) and outputs an evaluation signal (S4). A test connection pin (6) inputs test signals (S7) for testing the functionality of the circuit or a part of the circuit. An output pin (5) outputs a diagnostic signal (S3) based on the evaluation signal.