Patent ID: 7135923

Claim:
A differential amplifier ( 1 ) for amplifying an input differential signal having two components (In + , In − ) substantially in anti-phase to each other and generating an output differential signal having two differential components (Out + , Out − ), said amplifier ( 1 ) comprising a pair of inverters ( 10 ) coupled to a pair of adder components ( 30 ), each adder component comprising a resistor, the inverters ( 10 ) receiving the input differential signal, the amplifier ( 1 ) being characterized in that it further comprises a pair of controllable buffers ( 20 ) for receiving the input differential signal and outputting a signal to the pair of adder components ( 30 ), a bias of the said pair of buffers being cross-controlled by the input differential signal for controlling an amplification of said pair of controllable buffers ( 20 ).