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《Semiconductor Technology》 2009-12
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Design of CMOS Wildar Bandgap Voltage Reference with High Precision Multi-Output

Wang Yongshou,Wu Jin,Zheng Lixia,Zhao Xia(College of Integrated Circuits,Southeast University,Nanjing 210096,China)  
A high precision Widlar bandgap voltage reference with multi-output,load-drive capability,and improved structure of single-stage high-gain operational amplifier was presented.The PSRR performance was significantly improved with a high-gain operational amplifier,and its temperature coefficient was reduced by a simple compensation structure which was realized with only a MOS transistor.Simulated in CSMC 0.5 μm CMOS process,it has a temperature coefficient in-40 to 125 ℃ range of 6×10-6/℃,and 1.27×10-6/℃ if second-order compensation is applied.Its PSRR is higher than-57 dB.
【CateGory Index】: TN432
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