A novel low voltage current compensated high performance current mirror/NIC

2010 11th International Symposium on Quality Electronic Design (ISQED) Pub Date : 2010-03-22 DOI:10.1109/ISQED.2010.5450537

K. Monfaredi, H. F. Baghtash, S. J. Azhari

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引用次数: 15

Abstract

In this paper a novel high output impedance, low input impedance, wide bandwidth, very simple mirror/source structure with input and output voltage requirements less than that of a simple current mirror is presented. It can be also used as variable negative impedance converter (variable-NIC) by modifying amplifier transistors' aspect ratios. The circuit's principle of operation is discussed and compared to simple and low voltage cascode (LVC) current mirrors. Working with power supplies less than 1volt, the proposed circuit provides output impedance greater than LVC current mirror. Such outstanding features of this current mirror as high output impedance∼25.3M, low input impedance∼44, wide bandwidth∼498MHz, low input voltage ∼ 415mV, low output voltage ∼ 149mV and low current transfer error ∼1.3% (all at 10µA) makes it an outstanding choice for high performance applications. Simulation results in BSIM 0.35µm CMOS technology with Hspice are given in comparison with simple, and LVC current mirrors to verify and validate the performance of the proposed current mirror/NIC.

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一种新型的低电压电流补偿型高性能电流镜/NIC

本文提出了一种新型的高输出阻抗、低输入阻抗、宽带宽、非常简单的镜像/源结构，其输入和输出电压要求低于简单的电流镜像。它也可以作为可变负阻抗转换器(可变nic)通过修改放大器晶体管的宽高比。讨论了电路的工作原理，并与简单级联电流镜和低压级联电流镜进行了比较。在小于1伏的电源下工作，该电路提供的输出阻抗大于LVC电流镜。该电流反射镜具有高输出阻抗~ 25.3M、低输入阻抗~ 44、宽带宽~ 498MHz、低输入电压~ 415mV、低输出电压~ 149mV和低电流传输误差~ 1.3%(均为10 μ A)等突出特性，使其成为高性能应用的绝佳选择。通过Hspice在BSIM 0.35µm CMOS技术上的仿真结果，与简单、LVC电流镜进行了对比，验证了所提出的电流镜/NIC的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2010 11th International Symposium on Quality Electronic Design (ISQED)

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