Sādhanā ( IF 1.6 ) Pub Date : 2021-07-17 , DOI: 10.1007/s12046-021-01665-6 Narsaiah Domala 1, 2 , G Sasikala 1
High performance sub-volt current mirror are widely used in building mixed-mode low power VLSI systems. The performance of current mirror is decided by its key parameters which includes large operating range, low input compliance voltage, wide swing, large bandwidth along with very low input and very high output resistances. In this paper, a design of high performance low power current mirror is shown. The proposed current mirror is based on flipped voltage follower which enables the current mirror to work at low voltage. For improvement in input output resistance the proposed current mirror is employed with super transistor and super cascode stage. The current mirroring with minimum error is achieved till 1mA with power dissipation in the range of micro watt. The achieved bandwidth is 2.1 GHz along with low input and high output resistances as 0.407 ohm and 50 giga ohm, respectively. The process corner, temperature analysis and noise analysis of the proposed current mirror is also shown in this paper. The complete analysis is done using HSpice on 0.18 um technology at a dual supply voltage of 0.5 V.
中文翻译:
具有改进的输入输出阻抗的低功率翻转电压跟随器电流镜
高性能亚伏电流镜广泛用于构建混合模式低功耗 VLSI 系统。电流镜的性能取决于其关键参数,包括大工作范围、低输入顺从电压、宽摆幅、大带宽以及非常低的输入和非常高的输出电阻。在本文中,展示了一种高性能低功率电流镜的设计。建议的电流镜基于翻转电压跟随器,使电流镜能够在低电压下工作。为了改善输入输出电阻,建议的电流镜与超级晶体管和超级共源共栅级一起使用。以微瓦范围内的功耗实现最小误差的电流镜像直到 1mA。实现的带宽为 2.1 GHz,低输入和高输出电阻为 0。分别为 407 欧姆和 50 千兆欧姆。本文还显示了所提出的电流镜的工艺角、温度分析和噪声分析。完整的分析是使用 HSpice on 0.18 um 技术在 0.5 V 双电源电压下完成的。