Patent ID: 6384637
Filing Date: 2002-05-07
Classification: H03K

Abstract:
A differential amplifier comprising:a. a power-supply terminal; b. a first load having a first load terminal connected to the power-supply terminal, a second load terminal, and a first-load control terminal; c. a second load having a third load terminal connected to the power-supply terminal and a fourth load terminal; d. a first input transistor having: i. a control terminal connected to a first differential input terminal; ii. a first current-handling terminal connected to a current sink; and iii. a second current-handling terminal connected to the second load terminal; and e. a second input transistor having: i. a control terminal connected to a second differential input terminal; ii. a first current-handling terminal connected to the current sink; and iii. a second current-handling terminal connected to the fourth load terminal; f. wherein the second current-handling terminal of the first input transistor connects to the first-load control terminal through a configurable logic circuit, the configurable logic circuit including a filter control terminal adapted to selectively disconnect the second current-handling terminal of the first input transistor from the first-load control terminal in response to a filter control signal.