Patent ID: 8111061
Filing Date: 2012-02-07
Classification: G01R

Abstract:
1. A multi-output determination circuit that determines whether or not any one input voltage of a plurality of input voltages is equal to or higher than an upper-limit voltage value or equal to or lower than a lower-limit voltage value, the multi-output determination circuit comprising: a maximum level detection circuit that detects a maximum value of the plurality of input voltages; a minimum level detection circuit that detects a minimum value of the plurality of input voltages; a first comparator that compares an output of the maximum level detection circuit with an upper-limit reference voltage corresponding to the upper-limit voltage value; and a second comparator that compares an output of the minimum level detection circuit with a lower-limit reference voltage corresponding to the lower-limit voltage value, wherein the maximum level detection circuit is formed of a first diode-OR including a plurality of first diodes whose anodes are each connected to a respective one of the plurality of input voltages and whose cathodes are connected in common and the minimum level detection circuit is formed of a second diode-OR including a plurality of second diodes whose cathodes are each connected to a respective one of the plurality of input voltages and whose anodes are connected in common.