| 摘要 |
A novel source-coupled differential driver circuit fully compatible with digital visual interface (DVI/HDMI) signaling specification is disclosed. Driven output signals are connected to the source terminals of driving switches in the invention circuit, minimizing the detrimental impact of miller coupling capacitance between gate nodes and driven output nodes upon output slew-rate, enabling higher frequencies of operation. Undriven output wires are connected to source-termination impedances, providing a matched return current to the driven current signal, and reducing return path impedance substantially. Matched differential current drive from the source ensures true-differential signaling, eliminating shield current flow and improving signal integrity. Bit error rate (BER) is reduced and overall link performance is significantly enhanced due to improved slew rates, true-differential signaling and greater signal integrity, enabling long reach and high-speed, high-definition multi-media data transmission.
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