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[SOLVED] differentail voltage swing

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bunti

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what does a differential voltage swing of 1.2 V mean?
 

You can interpret this as peak-to-peak voltage of 1.2V (or 1.2Vpp to be more specific) for a balanced mode (differential pair).

what does a differential voltage swing of 1.2 V mean?
 

Does that mean that the swing should be symmetrical w.r.t zero voltage or can it be like 0.6V to 1.8 V?
 

As the name implies, Differential Voltage means Difference of Voltages across the load or the source, so there is no hard requirement to have zero-crossing at the mid-point.
However, it is usually the case with mid-point voltage as zero-crossing. This is because differential voltage usually terminated by equally-matched resistors of a T-network, passive balun, or by differential amplifier.

Does that mean that the swing should be symmetrical w.r.t zero voltage or can it be like 0.6V to 1.8 V?
 
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