Design of Bandgap Reference and Current Reference Generator with Low Supply Voltage

摘要

A design of a CMOS bandgap voltage reference and reference current generator is descnbed and the measurement results are presented in wide temperature range. Using by the resistive subdivision method,the reference circuit is operated with low supply. The measured reference voltage is 630mV and temperature coefficient of bandgap reference is 29ppm/°C from -10°C to 100°C with 1.2V supply voltage. The reference current of generator which uses the reference voltage is 50.2uA in that temperature range.