Patent ID: 6906583

Claim:
An apparatus including metal oxide semiconductor field effect transistor (MOSFET) cascode current mirror circuitry, comprising: reference circuitry including a first plurality of N telescopically coupled MOSFETs having a first plurality of like corresponding channel dimensions and responsive to reception of a reference current and at least one feedback voltage by providing a reference voltage, wherein N is an integer greater than unity; feedback circuitry coupled to said reference circuitry, including at least one scaled MOSFET, and responsive to reception of said reference voltage by providing said at least one feedback voltage in relation to said reference voltage, wherein one of said at least one scaled MOSFET has a channel dimension approximately equal to or less than 1/N 2 of a corresponding one of said first plurality of reference circuitry MOSFET channel dimensions and is responsive to said reference voltage; and cascode output circuitry coupled to said reference circuitry and said feedback circuitry, and responsive to direct reception of said reference voltage and said at least one feedback voltage by providing a cascode output current related to said reference current.