differential signaling

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differential signaling

Using two wires for each electrical path for high immunity to noise and crosstalk. The signals are sent down one wire as positive and the other as negative, and the circuit at the receiving end derives the signal from the difference between the two.

Differential vs. Single-Ended
Differential signaling is superior to single-ended signaling, where the reference voltage is ground and can vary over long distances. In differential signaling, the reference voltage is controlled. Typically, twisted pairs are used so that external radiation impacts both wires at the same place, and the noise can be detected more easily. See LVDS and SCSI.

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References in periodicals archive ?

Popular electrical standards such as USB, Ethernet, RS-485 and CAN use differential signaling and balanced twisted-pail media to provide reliable high-speed communication.

Differential signaling techniques help keep data flowing with high confidence: in real-world applications, there are several best practices to consider

Differential signaling has been around for a long time, and there is very little chance of it disappearing from the PCB design scene.

Benefits of implementing differential pairs: when using differential circuits, specific, design rules can maximize the advantages while minimizing design-induced difficulties

Differential signaling allows rejection of cross-talk and ground-bounce as common-mode noise.

Serial ATA: a comparison with Ultra ATA technology. (Serial ATA)

The differential signal already has a built-in reference, thus differential signaling can be used in situations where the driver and receiver do not share the same reference (ground).

Routing differential pairs: while some argue that differential pairs work just fine if they are not coupled, the layout tradeoffs say that routing traces closely is prudent. (Differential Signaling)