摘要
基于sime 0.18 μm工艺,电源电压3.5V,设计了一种具有低温度系数和高电源抑制比的带隙基准电压和电流.在cadence平台上仿真结果表明在-40 ～ 85℃度的温度范围内其温漂系数为4.57 ppm/℃,为提高其电源抑制比提出改为共源共栅结构,增加电压加法器和增加预稳压电路.
The bandgap reference circuit is implemented in SMIC 0.18μm CMOS technology and 3.5 V power. This circuit has a low temperature coeficient and a high power supply rejection ration（PSRR）. Cadence Spectre simulation result shows that the circuit has an accuracy of 4.57 × 10-6pPM/℃ at -40℃ to 85℃. To improve PSRR Cascode structre is proposed, and voltage subtractor and preregulator circuit is used.
出处
《电声技术》
2016年第12期25-29,共5页
Audio Engineering
关键词
带隙基准
电源抑制比
高性能
负反馈
bandgap
power supply rejection ration
high performance
