A very high performance self-biased cascode current mirror for CMOS technology

This paper presents a novel high performance self-biased cascode current mirror (CM) for CMOS technology. The proposed circuit shows a resistance compensated high bandwidth CM operating at low voltages. This circuit uses super cascode configuration to obtain high output impedance required for high performance of CM. Active implementation of passive resistances of the proposed circuit is shown. The simulations of proposed CM are carried out by Mentor Graphics Eldospice based on TSMC 0.18 μm CMOS technology, for input current range of 0–500 μA. A bandwidth of 2.26 GHz, input and output resistances of 679 Ω and 482 MΩ respectively, are obtained with a single supply voltage of −1 V.

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