| 摘要 |
In accordance with the teachings described herein, a digital video cable driver is provided that includes an input stage, an output stage and an amplification stage. The input stage converts a pair of differential input voltages into a control current. The output stage generates a digital output voltage for transmission over a cable. The amplification stage responds to the control current to control a voltage swing of the digital output voltage as a function of the control current. The amplification stage may include a transistor circuit that varies the digital output voltage in proportion to variations in the control current to cause the voltage swing, wherein the control current causes one or more transistors in the transistor circuit to remain in a saturated state during operation of the digital video cable driver.
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