| 摘要 |
A data slicer including a comparator and a clamping circuit has been provided wherein the clamping circuit functions to clamp a signal appearing at a first input of the comparator to a predetermined voltage swing. The first input of the comparator is coupled through a capacitive element to receive an input signal. The clamping circuit includes a first diode being coupled between the first input of the comparator and a first voltage. The clamping circuit also includes a transistor having its current carrying electrodes coupled between a first supply voltage terminal and the first input of the comparator. The control electrode of the transistor is coupled to receive a second voltage. The second input of the comparator is coupled to receive a bias voltage which is substantially equal to the midpoint of the first and second voltages. The data slicer further includes a hold circuit for disabling the clamping circuit.
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