new approach to cmos current reference with very low temperature coefficient
A novel CMOS current reference circuit with very low temperature coefficient is realized, by compensating the temperature performance of the resistor. This circuit gives out a current reference realizing a temperature coefficient of 50 ppmC over the temperature range of (0C, 110C) and a supply voltage coefficient of 210 ppm/V. This circuit consumes 85 mA at room temperature and can work properly with a supply voltage of 1-V.
cmos current reference temperature coefficient