Patent ID: 7843254
Filing Date: 2010-11-30
Classification: G05F

Abstract:
1. A method of generating a bandgap reference, comprising: generating a first current in a first circuit and a second current in a second circuit, wherein a control circuit forces the first and second currents to have a first magnitude, and wherein the first magnitude is proportional-to-temperature; generating a third current in a third circuit having a second magnitude, wherein the third current is based on a first voltage associated with the first circuit, and wherein the second magnitude is complementary-to-temperature; and adding the first and second magnitudes in a fourth circuit to form a third magnitude that is substantially constant over a change in temperature, wherein the fourth circuit generates a fourth current having the third magnitude , wherein adding the first and second magnitudes comprises generating a fifth current having the first magnitude in a fifth circuit and generating a sixth current having the second magnitude in a sixth circuit, wherein the fifth and sixth circuits sink current from the fourth circuit.