摘要
在对传统的CMOS带隙电压基准源电路的分析和总结的基础上,集合一级温度补偿、电流反馈技术,提出一种可以在低电源电压下工作,同时输出可调的低温度系数基准源电路。负反馈运放采用差分结构,简化了电路设计;同时放大器输出用作PMOS的电流源偏置,提高了电源抑制比。采用CSMC 0.6μm CMOS工艺实现,版图面积为0.41 mm×0.17 mm。Cadence Spectre仿真结果表明了设计的正确性。
The design of CMOS bandgap voltage reference with low power supply in temperature compensaion and current compensation technology is described in this paper. The differential amplifier is used for bandgap reference negative feedback amplifier,which simplifies circuit design. The biasing of PMOS current source is derived from the output voltage of the ampli- fier,leading to a high power supply rejection. The bandgap references are implemented in a standard 0.6μm CMOS process, The area of layout is 0.41 min×0.17 mm. The entire circuit is simulated with Cadence Spectre simulation tool,the results show accuracy of the design.
出处
《现代电子技术》
2007年第16期168-170,共3页
Modern Electronics Technique
关键词
低压
低温度系数
基准源
CMOS
low voltage
low temperature coefficient
voltage reference
COMS
