摘要
该文依据带隙基准的基本原理设计一基于CSMC0.5um标准CMOS工艺的非线性二阶补偿的带隙基准电压源,在基准中利用非线性电流INL进行二阶补偿,该基准源的工作温度为-25℃～-125℃,温度系数为24×10-6V/℃。增加基于冗余晶体管的启动电路电流仅为1-2uA,具有较小的功耗,较好的可靠性。常温下的输出电压为1.25V,电源电压为3.3V-5.0V,达到了一般的应用要求。
According to the basic principle of bandgap reference,based on the CSMC standard CSMC0.5um CMOS process,we design a bandgap voltage reference with second order nonlinear compensation.Nonlinear current INL is used to second order compensation in the reference.The reference working temperature is-25℃～-125℃.Its temperature is 24×10-6V/℃.Current of start-up circuit of based on redundancy transistors is 1-2uA.The circuit has lowl power and good reliability.At room temperature,output voltage is 1.25 V,power supply voltage is 3.3 V-5.0 V.It reached general application requirements.
出处
《电子质量》
2011年第2期5-7,16,共4页
Electronics Quality
基金
重庆市教委科学技术研究项目(KJ100512)
重庆市自然科学基金项目(CSTC2010BB2412)
关键词
带隙基准
非线性二阶补偿
冗余晶体管
bandgapreference
the second order nonlinear compensation
redundancy transistors
