| 摘要 |
A data signaling apparatus includes a differential amplifier for providing an amplified differential output on a pair of outputs in response to a differential signal provided on a pair of inputs, and a clamping resistor between the pair of inputs. The clamping resistor acts to effectively reduce the swing in differential inputs, thereby allowing high gain that does not result in problematic differential outputs. Further, since the resistor is operative for all voltage ranges, it is useful in small signal applications where diodes cannot be used or are too difficult to implement. A data signaling method includes receiving a differential signal on a pair of inputs, reducing the magnitude of the differential signal by a scale factor using a clamping resistor across the pair of inputs, and providing an amplified differential output on a pair of outputs in response to the scaled differential signal provided on the pair of inputs.
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