Patent ID: 7215156
Filing Date: 2007-05-08
Classification: H04L

Abstract:
1. A circuit comprising: first, second, third and fourth circuit nodes; a first current switch controllably coupled to the first circuit node; a second current switch controllably coupled to the second circuit node, wherein if a differential signal is applied across the first and second circuit nodes, the first current switch is configured to be closed while the second current switch is open if the differential signal has a first polarity, and the second current switch is configured to be closed while the first current switch is open if the differential signal has a second polarity; a current allocation component coupled to the first and second current switches, and configured to allocate current between the first and second current switches such that increasing current is allocated through the first current switch and a first current path between the current allocation component and the first current switch when the first current switch is closed and the second current switch is open until the current allocated through the first current switch reaches a state in which more current passes through the first current switch than the second current switch, and increasing current is allocated through the second current switch and a second current path between the current allocation component and the second current switch when the second current switch is closed and the first current switch is open until the current allocated through the second current switch reaches a state in which more current passes through the second current switch than the first current switch, wherein the third circuit node is in the first current path, and the fourth current node is in the second current path; and a first capacitive coupling mechanism at least selectably capacitively coupling the third circuit node and the second circuit node.