Patent ID: 7196567

Claim:
A termination system for a plurality of communication channels extending between first and second integrated circuits, the termination system comprising: a. for each communication channel, first and second nodes, the first node connected to the communication channel; and a plurality of impedance legs coupled between the first and second nodes, each leg including at least one transistor having first and second current-handling terminals and a control terminal, the at least one transistor exhibiting a first impedance response to fluctuations in at least one of temperature and voltage; b. a feedback leg having a feedback node and exhibiting a second impedance response to the fluctuations; c. a comparator having a first input terminal coupled to a reference, a second input terminal coupled to the feedback node, and an output terminal coupled to the control terminals of the pluralities of transistors; and d. a plurality of level shifters, wherein the output terminal of the comparator is coupled to each of the control terminals via one of the plurality of level shifters.