Circuit arrangement for monitoring the temperature of integrated circuits

摘要

To monitor the temperature of integrated circuits and/or devices containing such integrated circuits, a threshold switch (which may have hysteresis), the output signal (which may be combined in a wired-OR) of which indicates the maintenance or the transgression of a predetermined temperature threshold, is supplied with the forward voltage of a diode implemented on a chip. For this purpose, the diode can be arranged in a branch of a voltage-fed bridge circuit, the output terminals of which bridge are connected to the two inputs of an operational amplifier outputting the output signal.