Design of a High Precision CMOS Bandgap Voltage Reference Circuit with Current Feedback
Guo‐Ping Jiang · Modern Electronics Technique · 2008
This paper describes the design of a high precision bandgap reference,implemented in 0.5 μm n-well CMOS technology.The circuit generates a reference voltage of 1.245 V and has a temperature coefficient of 12.5 ppm/℃ between 0 and 70 ℃.It can operate with supply voltages between 2.8 V and 8 V.It has a PSRR of 107 dB under low frequency.This circuit works in a current feedback mode,and it generates its own reference current,resulting in a stable operation.The architecture designed in this circuit can efficiently reduce the offset voltage of operation amplifier.