A Low-Voltage Current Mirror for Transconductance Amplifiers

Hamdi ERCAN, Sezai Alper Tekin


In this study, a low-voltage current mirror to use in differential pair as an active load is introduced. The proposed current mirror which can operate at ±0.5 V has high output impedance and low input impedance. The proposed structure employs the principle of the voltage level-shifting for PMOS transistors. The voltage level-shifting operation has been achieved by using bulk voltage at this structure. Also, spice simulations justify the highly good performance of this current mirror with a bandwidth of 11 GHz by using external capacitor at input current of 200 μA.


PMOS level shifter; low-voltage; current mirror; current-mode; differential pair; bulk voltage

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DOI: https://doi.org/10.33180/InfMIDEM2021.104


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