Patent ID: 8717727
Filing Date: 2014-05-06
Classification: G01R,H02H

Abstract:
1. A comparator, comprising: a first potential supply terminal; a second potential supply terminal supplying a different potential from that of the first potential supply terminal; a first transistor of a first conductivity type coupled between the first potential supply terminal and a first node, and including a control terminal coupled to a first terminal; a second transistor of the first conductivity type coupled between the first potential supply terminal and a second node, and including a control terminal coupled to a second terminal; a third transistor of a second conductivity type coupled between the first node and a third terminal, and including a control terminal coupled to the second node; and a fourth transistor of the second conductivity type coupled between the second node and the second potential supply terminal, and including a control terminal coupled to the second node, wherein a reference voltage is supplied between the first terminal and the second terminal, a target voltage is supplied between the third terminal and the second potential supply terminal, and a comparison result signal generated from a comparison between the reference voltage and the target voltage is output from the first node.