Common mode, differential mode

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This article/section is a stub — some half-sorted notes, not necessarily checked, not necessarily correct. Feel free to ignore, or tell me about it.

Common mode versus differential mode is about communicating a signal electrically, usually as a voltage signal.

Theoretical side

Common mode

Common mode signalling points at a situation where you have

  • a reference conductor, which both ends of this communication have in common
often called "signal common".
  • a conductor for a signal

And the signal is the voltage difference between the two.

Differential mode / differential signalling

This article/section is a stub — some half-sorted notes, not necessarily checked, not necessarily correct. Feel free to ignore, or tell me about it.

Perhaps-necessary clarification

Common mode, differential mode, single ended

If a distinction is made between single ended and common mode, single-ended often refers more to the concept, common mode more to electrical reality of conductors.

Both single-ended and common mode are mainly contrasted with differential mode

Differential in more depth

Derived and related terms

Practical side

Balanced audio / pro audio

See Music_-_studio_and_stage_notes#Notes_on_balanced_audio


See also