Wide current range and high compliance-voltage bulk-driven current mirrors: Simple and cascode

Abstract

This paper presents novel bulk-driven current mirror and bulk-driven cascode current mirror. Bulk-driven technique is employed to overcome a threshold voltage limitation. High accuracy transfer characteristic over wide current range is achieved through a negative feedback. The proposed circuits are designed and simulated with a 0.18 μm CMOS technology. They operate at 1 V power supply. The simulation results show the headroom voltage of 0.11 V and 0.16 V for the proposed bulk driven current mirror and bulk driven cascode current mirror, respectively.