New High Precision CMOS Voltage Reference
Huan Deng · Dianzi qijian · 2007
According to the analysis of current and voltage temperature-characteristic of NMOS transistor,the gate-source voltage of two similar diode-connected NMOS transistor biased with two different PTAT current source is able to obtain different temperature coefficient.Under the compensation of the two gate-source voltage,a new CMOS voltage reference was designed.The circuit was designed by TSMC 0.18 μm CMOS process,and simulated by Cadence Spectre using BSIM3V3 model.The results indicated that when VDD is equal to 1.2 V the temperature coefficient was only 28×10-6/℃.