Patent ID: 7122998
Filing Date: 2006-10-17
Classification: G05F,Y10S

Abstract:
1. A bandgap reference circuit comprising: first, second and third current sources ( a current summing circuit; a first voltage passing unit connecting an output of the first current source as its input and connecting its output to a first end of a third resistor (R a second voltage passing unit connecting an output of the third current source as its input and feeding its output to a first end of a fourth resistor (R a fifth resistor (R wherein a first current through the fifth resistor bears a substantially linear relationship with a summation of a second current through the third resistor and a third current through the fourth resistor, wherein the outputs of the first and second voltage passing units track their respective inputs, and wherein by selecting predetermined values for the first, second, third, fourth, and fifth resistors in conjunction with selections of the first BJT device module and the second BJT device module, a reference voltage of the circuit across R