Design,Characterization and Simulation of Advanced Current Mirror

Abstract

For modern CMOS technologies with shorter channel lengths, smaller voltage gain and lower supply voltage impose many constraints on the performance and circuit structures of the current mirrors.Current mirror is the core structure for almost all analog and mixed mode circuits determine the performance of analog structures, which largely depends on their characteristics.For high performance analog circuit applications, the accuracy and bandwidth are the most important parameters to determine the performance of the current mirror. Recently, current mode signal processing has attracted, a great deal of interest due to the many advantages that current mode circuits o er, such as wide bandwidth, good stability, negligible current or voltage variation against VDD and temperature, low power dissipation, etc.An e cient implementation of a CMOS current mirror suitable for low voltage applications and achieve low input resistance, high accu- racy and high output resistance.In this report advanced current mirror, like wide swing and self biased cascode current mirror are characterized, simulated and analyzed with di erent aspects and these topologies are also compared with basic current mirrors,like simple and cascode current mirror.To support the circuit design, simulation and layout design, TSMC 0.35qm CMOS Technology is used here.Whole work is carried out by Eldo Spice, Design Architect and IC Sta- tion(Mentor Graphics).