A driving circuit for a transceiver output port of a local area networking device is provided, including first and second current sources coupled to the ground, first and second resistors coupled to the supply voltage with the resistances of the first and second resistors each being equal to half that...http://www.google.com/patents/US7075977?utm_source=gb-gplus-sharePatent US7075977 - Circuit for a transceiver output port of a local area networking device
