Simple reference current source insensitive to power supply voltage variation - improved Minoru Nagata current source

This paper describes design improvement of the constant current source (peaking current mirror), originally invented by Nagata Minoru in 1966. Our improved current mirror circuits with MOS and Bipolar are insensitive to wide range of power supply voltage variation; they are realized by addition of multiple current peaks. We show their circuit topologies, operations and simulation results. The proposed reference current circuits are simple, small yet well-insensitive to power supply voltage variations, and hence they can be widely used in analog ICs.