Patent ID: 7256646

Claim:
A differential amplifier, comprising: a first input transistor having a first node coupled to a first pull-up device, a second node coupled to a first pull-down device, and a first control input node effective for receiving a true input signal, said first input transistor being characterized by a first feedback capacitance between said first control input node and said first node and by a first coupling capacitance between said first control input node and said second node, said first feedback capacitance being at least partially dependent on said true input signal; a second input transistor having a third node coupled to a second pull-up device, a fourth node coupled to a second pull-down device, and a second control input node effective for receiving a complement input signal, said complement input signal being the inverse of said true input signal, said second input transistor being characterized by a second feedback capacitance between said second control input node and said third node and by a second coupling capacitance between said second control input and said fourth node, said second feedback capacitance being at least partially dependent upon said complement input signal; a first compensating variable capacitance coupled between said first input node and said third node, said first compensating variable capacitance having an at-rest capacitance magnitude substantially similar to the at-rest capacitance magnitude of said first feedback capacitance; a second compensating variable capacitance coupled between said second input node and said first node, said second compensating variable capacitance having an at-rest capacitance magnitude substantially similar to the at-rest capacitance magnitude of said second feedback capacitance.