Patent ID: 6876182

Claim:
An apparatus including a metal oxide semiconductor field effect transistor (MOSFET) current mirror circuit with a cascode output, comprising: first and second power supply terminals to convey a power supply voltage; current and voltage source circuitry, coupled between said first and second power supply terminals, that responds to a received input current by providing a first bias voltage and a mirrored current proportional to said input current; and cascode circuitry, coupled between said first and second power supply terminals and to said current and voltage source circuitry, that responds to a received second bias voltage, said first bias voltage and said mirrored current by providing a cascode current proportional to said mirrored current; wherein said power supply voltage has a magnitude with a minimum approximately equal to a sum of a transistor input biasing voltage and two transistor output operating voltages, and said second bias voltage has a magnitude with a maximum approximately equal to said power supply voltage magnitude and a minimum approximately equal to a sum of another transistor input biasing voltage and another transistor output operating voltage.