An improved current-mode CMOS voltage reference

被引：11
|
作者：
Harrison, WT [1 ]
Connelly, JA [1 ]
Stair, R [1 ]
机构：
[1] Georgia Inst Technol, Atlanta, GA 30332 USA
来源：
2001 SOUTHWEST SYMPOSIUM ON MIXED-SIGNAL DESIGN | 2001年
关键词：
D O I：
10.1109/SSMSD.2001.914931
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
An improved current-mode CMOS voltage reference derives its temperature independent characteristic from two temperature dependent currents which are summed together into a resistor to generate the reference voltage. A CMOS proportional to absolute temperature (PTAT) current generator using substrate bipolar transistors creates the current that increases with temperature. A CMOS threshold voltage extractor circuit creates the conversely proportional to absolute temperature (CTAT) current that decreases with increasing temperature. The reference operates over a temperature range of 0 to 100 degreesC with a power supply voltage between 3.3 and 7 V. Simulations show that over these conditions, the output voltage varies by less than 1% over the specified temperature range while using less than 75 muA of current.
引用
收藏
页码：23 / 27
页数：5
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