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HandWiki. Differential Signaling. Encyclopedia. Available online: https://encyclopedia.pub/entry/32540 (accessed on 12 September 2026).
HandWiki. Differential Signaling. Encyclopedia. Available at: https://encyclopedia.pub/entry/32540. Accessed September 12, 2026.
HandWiki. "Differential Signaling" Encyclopedia, https://encyclopedia.pub/entry/32540 (accessed September 12, 2026).
HandWiki. (2022, November 02). Differential Signaling. In Encyclopedia. https://encyclopedia.pub/entry/32540
HandWiki. "Differential Signaling." Encyclopedia. Web. 02 November, 2022.
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Differential signaling is a method for electrically transmitting information using two complementary signals. The technique sends the same electrical signal as a differential pair of signals, each in its own conductor. The pair of conductors can be wires in a twisted-pair or ribbon cable or traces on a printed circuit board. Electrically, the two conductors carry voltage signals which are equal in magnitude, but of opposite polarity. The receiving circuit responds to the difference between the two signals, which results in a signal a magnitude twice as large. Any interference caused by the transmission of differential signals tend to cancel out resulting in reduced emission that could affect nearby circuits.
electrical signal
differential pair
polarity
References
- "The Why and How of Differential Signaling" (in en).
- Graham Blyth. "Audio Balancing Issues". Professional Audio Learning Zone. Soundcraft. "Let’s be clear from the start here: if the source impedance of each of these signals was not identical i.e. balanced, the method would fail completely, the matching of the differential audio signals being irrelevant, though desirable for headroom considerations."
- "Part 3: Amplifiers". Sound system equipment (Third ed.). Geneva: International Electrotechnical Commission. 2000. p. 111. IEC 602689-3:2001. "Only the common-mode impedance balance of the driver, line, and receiver play a role in noise or interference rejection. This noise or interference rejection property is independent of the presence of a desired differential signal."
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