Circuit arrangement for detecting operating voltage in digital semiconductor switch, has control block providing switching signal based on voltage at node and providing another switching signal through inversion of former signal

摘要

The arrangement has a detection block (1) comprising a transistor (P1) connected between a supply voltage connection (VDD) and a connection node (K1). Another transistor (P2) is connected between the voltage connection and another connection node (K2), where the transistors are designed as p-channel FETs. A control block (2) provides a switching signal based on voltage at the latter node and provides another switching signal through inversion of the former signal, where the former signal is supplied to a switch (N1) and the latter signal is supplied to a control connection (S1).