A high precision bandgap reference used in power management ICs

被引:0
|
作者
Gu Shurong [1 ]
Wu Xiaobo [1 ]
Yan Xiaolang [1 ]
机构
[1] Zhejiang Univ, Inst VLSI Design, Hangzhou 310027, Peoples R China
基金
中国国家自然科学基金;
关键词
bandgap reference; high precision preregulate;
D O I
暂无
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
A 2.5V high precision BiCMOS bandgap reference with supply voltage range of 6V to 18V was proposed and realized. It could be applied to lots of Power Management ICs (Intergrated Circuits) due the high voltage. By introducing a preregulated current source, the PSRR (Power Supply Rejection Ratio) of 103dB at low frequency and the line regulation of 26.7 mu V/V was achieved under 15V supply voltage at ambient temperature of 27 degrees C. Moreover, if the proper resistance trimming is implemented, the temperature coefficient could be reduced to less than 16.4ppm/degrees C. The start up time of the reference voltage could also be decreased with an additional bipolar and capacitor.
引用
收藏
页码:194 / +
页数:2
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