Design of a Band-gap Voltage Reference Source Based on CMOS Process
Li Hu · Journal of Southwest University of Science and Technology · 2007
A band-gap voltage reference circuit suitable for CMOS process is presented.Using the compensation technology through the MOS current mirror and a common source and gate current source load structure,the band-gap voltage reference source has a simple structure,low temperature coefficient and high power supply rejection ratio(PSRR).The simulation result shows that a power supply refection ratio(PSRR) of 52 dB and a temperature coefficient of 6.5 ×10-6 V/ ℃ from-20℃ to 120℃ can be obtained.It has been embedded in a trans-impedance amplifier used in optical communication,then fabricated and tested,and the perfect performance of it can fully meet the amplifier.