Patent Number: 7,042,255

Title: Programmable differential capacitance for equalization circuits

Abstract: Programmable differential capacitance is implemented in equalization circuits. The programmable differential capacitance improves the common mode rejection ratio of circuits processing differential signals of various frequencies and voltage swings. Multiple capacitance devices provide the programmable capacitance, which provides an equalization circuit with different, selectable (i.e., programmable) values of capacitance for boosting the transition speed and strength of differential signals processed by the equalization circuit.

Inventors: Maangat; Simar (Sunnyvale, CA)

Assignee: Altera Corporation

International Classification: H03K 5/22 (20060101)

Expiration Date: 5/09/02018