摘要
基于UMC 0.25μm BCD工艺,设计了一种4阶曲率补偿的低温漂带隙基准电压源。通过设置正负温度系数相异的电阻的比值,抵消了三极管发射极-基极电压泰勒级数展开后的高阶项,实现了4阶曲率补偿。经过Hspice仿真验证,基准输出电压为1.196V,-40℃~150℃温度范围内温度系数达到1.43×10-6/℃;低频时电源抑制比为-70.8dB,供电电压在1.7~5V变化时,基准输出电压的线性调整率为0.039%,整体静态电流仅为9.8μA。
Based on UMC 0.25μm BCD technology,a low temperature coefficient and low power consumption bandgap reference with 4th-order curvature compensation was proposed.The 4th-order curvature compensation was achieved by using the ratio of resistance with different positive temperature coefficient and negative temperature coefficient to counteract the high-order items of the emitter-base voltage expanded in Taylor series.By simulation and verification with HSPICE,the circuit achieved an output voltage of 1.196 V,a temperature coefficient of 1.43×106/℃in the temperature range of-40 ℃to 150 ℃,a PSRR of-70.8dB at low frequency and a linear regulation of0.039%in the power supply voltage range of 1.7Vto 5V.The total quiescent current was only 9.8μA.
出处
《微电子学》
CAS
CSCD
北大核心
2016年第1期34-37,共4页
Microelectronics
基金
国家自然科学基金资助项目(61271090)
国家自然科学基金重点项目(61531016)
关键词
带隙基准
曲率补偿
低温漂
低功耗
Bandgap reference
Curvature compensated
Low temperature coefficient
Low power consumption
