CMOS bandgap voltage and current references

Year	Description
1992	Invention patented by Chung-Yu Wu and Shu-Yuan Chin on October 18th, 1992. Abstract: Precise CMOS bandgap voltage and current references which uses the difference of MOS source-gate voltages to perform efficient curvature compensation are proposed and analyzed. Applying the developed design strategies, bandgap voltage references (BVR) with a temperature drift below 10 ppm/.degree.C. and a power supply drift below 10 ppm/V can be realized. For bandgap current references, both drifts can be under 15 ppm. An experimental BVR chip shows an average drift of 5.5 ppm/.degree.C. from -60.degree. C. to 150.degree. C. and 25 .mu.V/V for supply voltages between 5 V and 15 V at 25.degree. C. Due to novel curvature compensation, the circuit structure of the proposed references is simple and both chip area and power consumption are small.
Source: selected by the editor from original sources.

Invention: CMOS bandgap voltage and current references