Patent ID: 6091268
Filing Date: 2000-07-18
Classification: H03K

Abstract:
A potential detecting circuit which determines whether a comparison potential reaches a prescribed detection level or not, comprising:reference current supplying means for supplying a reference current;comparison current supplying means receiving said comparison potential, for supplying a comparison current, the amount of which is given by conversion of said comparison potential with a prescribed current conversion rate, said prescribed current conversion rate varying on the basis of a current conversion signal;an intermediate node provided between said reference current supplying means and said comparison current supplying means so that one of said reference current and said comparison current flows in and the other flows out;level detection signal outputting means for outputting a level detection signal on the basis of a potential at said intermediate node;an external input terminal for receiving an externally-inputted signal; andexternally-inputted signal input means receiving said externally-inputted signal through said external input terminal to output said externally-inputted signal as said current conversion signal.