Patent ID: 7791414

Claim:
A current feedback amplifier, wherein said current feedback amplifier is coupleable with a first supply rail and a second supply rail, said current feedback amplifier comprising: an input stage configurable to provide a first input and a second input for said current feedback amplifier, wherein said first and second inputs are operable to receive input voltages within 800 mV of said first supply rail or said second supply rail, and wherein said input stage comprises an input biasing and conductance control circuit, a complementary input stage, a turn around circuit, and an output circuit in cascade, said complementary input stage comprising: an NPN transistor pair coupled to said first supply rail and coupled to a second current source of said input biasing and conductance control circuit; and a PNP transistor pair coupled to said second supply rail and coupled to a first current source of said input biasing and conductance control circuit, wherein an output node of said input stage is coupled to a node of said second input; a first current mirror coupled with said input stage; a second current mirror coupled with said input stage; and an output stage coupled with said first and second current mirrors, said output stage for providing an output for said current feedback amplifier.