Crosstalk (electronics)

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For other uses, see Crosstalk (disambiguation).

In electronics, the term crosstalk (XT) has the following meanings:

• Undesired capacitive, inductive, or conductive coupling from one circuit, part of a circuit, or channel, to another.
• Any phenomenon by which a signal transmitted on one circuit or channel of a transmission system creates an undesired effect in another circuit or channel.

In telecommunication or telephony, crosstalk is often distinguishable as pieces of speech or signaling tones leaking from other people's connections.

In integrated circuit design, crosstalk normally refers to a signal affecting another nearby signal. Usually the coupling is capacitive, and to the nearest neighbor, but other forms of coupling and effects on signal further away are sometimes important, especially in analog designs. See signal integrity for tools used to measure and prevent this problem, and substrate coupling for a discussion of crosstalk conveyed through the IC substrate. Twisted pair cabling is the most common form of wiring which typically reduces the effects of crosstalk.

References

• From Federal Standard 1037C and from MIL-STD-188.

See also

• Audio system measurements
• Signal integrity
• Substrate coupling

External references

• An Intel [educational slideshow on capacitive and inductive crosstalk]

 

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