Patent ID: 6028457
Filing Date: 2000-02-22
Classification: H03K

Abstract:
A CMOS comparator in which an input voltage is compared with a reference ground voltage, and a voltage signal indicating a difference between the input voltage and the reference ground voltage can be tapped off at an output connection of the CMOS comparator, comprising:two first current mirrors, each of the first current mirrors having a first transistor and a second transistor;a second current mirror having a first transistor and a second transistor;the two first current mirrors and the second current mirror connected in series thereby forming a first current path between a reference ground voltage connection and a bias voltage connection, and forming a second current path between an input voltage connection and the bias voltage connection;a current source in the first current path between one of the two first current mirrors in the first current path; and the second current mirror in the first current path; andan output connection is connected between one of the two first current mirrors in the second current path and the second current mirror in the second current path.