This paper presents a novel PTAT current reference with fast settling behavior and high PSRR in UMC 110 ​nm technology. In addition to a classic voltage-clamp operational amplifier for forming △V_BE/R, a novel extra operational amplifier with functions of current dynamic equalization and automatic active fast start-up and shut-off is introduced to enhance the settling behavior and current matching accuracy. Results have shown that more than 93 ​dB PSRR across the temperature range of -40—85 ​°C is achieved. The complete design consumes a total current of 22.03 μA from a 2.5 ​V power supply with only 20% in auxiliary circuits, and correct and seamless transition from off state to steady state is realized.

本文提出了一种新颖的PTAT电流参考，它具有UMC 110纳米技术中的快速建立行为和高PSRR。除了用于形成△V _BE / R的经典电压钳位运算放大器外，还推出了具有电流动态均衡和自动主动快速启动和关断功能的新型额外运算放大器，以增强稳定性能和电流匹配准确性。结果表明，在-40-85°C的温度范围内实现了超过93 dB的PSRR。完整的设计从2.5伏电源消耗22.03μA的总电流，辅助电路中只有20％的电流，并且实现了从关断状态到稳定状态的正确无缝过渡。