Patent ID: 6384670
Filing Date: 2002-05-07
Classification: G05F,G06F,H03K

Abstract:
A method of forming a bandgap voltage comparator, said method comprising the steps of:forming a first current mirror with first and second transistors, comprising the steps of connecting the second transistor as a first diode, connecting a first end of a first resistor to a base and a collector of the second transistor, connecting the first end of the first resistor to a base of the first transistor, and connecting a second end of the first resistor to a first voltage node; forming a second current mirror with third and fourth transistors, comprising the steps of connecting the third transistor as a second diode, connecting a first end of a second resistor to a base and a collector of the third transistor, connecting the first end of the second resistor to a base of the fourth transistor, and connecting a second end of the second resistor to the first resistor first end; and connecting emitters of the first, second, third and fourth transistors to a second voltage node.