一种高性能电流调节器的设计  

Design of High-Performance Current Regulator

作　　者：周泽坤[1] 陈志军[1] 石跃[1] 张波 

机构地区：[1]电子科技大学IC设计中心,四川成都610054

出　　处：《微电子学》2007年第3期448-451,共4页Microelectronics

摘　　要：基于0.5μm CMOS工艺,设计了一种能够在较大范围内工作的电流调节器。该电路通过适当地利用NMOS和PMOS差分输入对的各自特性,以及改进的差分结构,实现了工作范围的扩展和共阴极LED的驱动。该电流调节器采用的运算放大器都是一级的自补偿结构,从而简化了电路的稳定性设计,提高了物理实现的成功率。仿真结果表明,该电流调节器在整个工作范围内的精度可以达到80%以上。Based on 0. 5 μm CMOS technology, a current regulator working in extended range is designed. With the benefits of NMOS and PMOS differential input pairs and the improved differential structure, the operation range is extended, and the driver of the common cathode is realized. Besides, operational amplifiers used in the circuit are all one-stage and self-compensated, which simplifies the design for stability and facilitates its implementation. Simulation results show that the current regulator has an accuracy above 80% over entire operation range.

关 键 词：电流调节器 自补偿 CMOS集成电路 

分 类 号：TN432[电子电信—微电子学与固体电子学]