A high PSRR bandgap reference circuit design
Qin Shui-jie · Electronic Design Engineering · 2013
A novel Banba bandgap reference circuit was presented based on CSMC0.5 Process.In this paper,on the basis of the original circuit,by using cascade current mirror structure,and introduce a negative feedback loop method.Greatly improves the overall circuit power supply rejection ratio.the Spectre simulation results showed that in the-40 ~100 ℃ temperature range,output voltage swing is only 1.7 mV.at low frequency is more than 100 dB power supply rejection ratio(PSRR),the entire circuit power only 30 μA.