Patent ID: 7193456

Claim:
An apparatus including a current conveyor circuit with improved power supply noise immunity, comprising: first and second power supply electrodes; first serial circuitry coupled between said first and second power supply electrodes, and including input and output electrodes, a first circuit electrode and at least a first transistor; second serial circuitry coupled between said first and second power supply electrodes and said input electrode, and including a second circuit electrode and at least a second transistor; and third serial circuitry coupled between said second power supply electrode and said first and second circuit electrodes, and including at least a third transistor; wherein said first transistor is respective to a first reference current by operating at a first current density, said second transistor is responsive to a second reference current by operating at a second current density which is substantially equal to said first current density, and said third transistor is responsive to a third reference current by operating at a third current density which is less than said first current density.