Design of a novel regulated cascode current mirror

In this paper, a novel regulated cascode current mirror is proposed. In proposed structure cascode stage is used to enhance the output impedance of existing regulated cascode current mirror. A feedback loop is used to stabilize the output current. Output impedance of proposed circuit is three times improved and power dissipation is same as existing regulated cascode current mirror at the cost of high systematic gain error. The output current is mirrored with a transfer error less than 1% when the input current is increased from Zero to Twenty micro ampere that´s why the proposed circuit can be used for low power application.