Patent ID: 7915948

Claim:
A current mirror circuit, comprising: first and second MOS transistors having commonly—connected gates and commonly-connected sources; a third MOS transistor having a drain connected to said commonly-connected gates of said first and second MOS transistors, and a source connected to a drain of said first MOS transistor, a gate of said third MOS transistor being connected to a constant voltage source; a constant current source connected to said drain of said third MOS transistor; a first terminal connected to said drain of said first MOS transistor and to said source of said third MOS transistor, at which an input current is provided into said circuit; a second terminal connected to said commonly-connected sources of said first and second MOS transistors, to provide a common reference for said circuit; and a third terminal directly connected to a drain of said second MOS transistor, at which an output current mirroring said input current is output as an output current of said circuit, wherein said constant voltage source connects between said second terminal and said gate of said third MOS transistor.