无电阻带隙基准电压源

A Bandgap Reference Without Resistors

本文提出了一种无需使用电阻的带隙基准电压源。采用反函数方法,利用两对成比例的源耦差分对产生基准中与温度成正比(PTAT)的电压项。该电路实现了一阶温度补偿,在0.6μmCMOS工艺条件下,电路spectre模拟仿真结果表明,在-45°C～-80°C范围内,输出电压变化低于1mV。电源电压为4V时,功耗为52μW。

This paper describes a bandgap reference without resistors. Based on inverse function technique, the circuit uses two ratioed source-coupled differential pairs to produce the proportional to absolute temperature （PTAT） term in the reference. It fulfills the first-order temperature compensation. The simulation with spectre was carried out using a 0.6μm CMOS process. The results indicate that the proposed BGR circuit can operate on a 3 to 5 V power supply, the peak to peak output voltage change is 679μV from-45℃ to 80℃ and it dissipate 52 μW from a 4 V supply.