A radio receiver portion of a transceiver includes a differential amplifier that
is used to provide a fast response. A pair of input MOSFETs of the differential
amplifier stage are coupled to an active load. A voltage follower circuit is coupled
to each output stage of the two stage differential amplifier to drive a current
through a load without reducing the output voltage. The voltage follower stages
each include a current mirror that replicates current level defined by an input
MOSFET of the voltage follower circuit and, by its configuration, a voltage level
produced by the differential amplifier to the input MOSFET of the voltage follower
circuit. Accordingly, the differential amplifier stage defines the amplification
of the circuit while the voltage follower circuits replicate the amplified output
with the ability to drive a load.