Design and Implementation of MOSFET Based Folded Cascode Current Mirror

A high performance MOSFET current mirror in a folded cascade configuration is design to achieve a high output resistance. The design has both n and p type MOSFET for current feedback between gate and source in order to achieve a constant drain current. In the discussed circuits we have found out the range of currents for which the circuit is showing amplification and mirroring effect. We need high output impedance so to drive more circuitry from it and the current mirror is the circuit that implements the principle that if a gate-source voltage of two uniforms MOS transistors is same then their channel current flowing would be equal. We have implemented the folded cascode current mirror where the range of current on which the circuit is mirroring the current ranges from 100mV to 700mV. The circuit is implemented on cadence virtuoso 180nm technology with 1.8V supply voltage.