Patent ID: 6528979
Filing Date: 2003-03-04
Classification: G05F,Y10S

Abstract:
A reference current circuit comprising:a power supply line; a ground line; a current mirror circuit installed between the power supply line and the ground line; and a third transistor connected between between the power supply line and the ground line, wherein the current mirror circuit includes a first resistor having one end connected to a first node, and the other end connected to a second node, a first transistor connected between the second node and the ground line, and having a control terminal connected to the first node, and a second transistor connected between a third node and the ground line, and having a control terminal connected to the second node, and the third transistor has a control terminal connected to the third node, drives the current mirror circuit for setting a current source for driving the first and second transistors as a mirror current, and constitutes a negative feedback current loop.