Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

Aggressor voltage (V)

Required number input.

Coupled voltage (V)

Required number input.

Compute crosstalk in decibels as 20 x log10(coupled voltage / aggressor voltage). The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Crosstalk (dB)

The resulting crosstalk returned as a number.

• Crosstalk estimates depend on geometry, coupled length, rise time, termination, reference planes, direction, and modal propagation. A lumped coupling coefficient cannot replace a transmission-line model for electrically long interconnects.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

• Crosstalk Far End Voltage

  Estimate far-end crosstalk voltage from a measured or specified dimensionless far-end coupling coefficient and aggressor voltage; this is not a cable-geometry prediction.

• Crosstalk Near End Voltage

  Estimate near-end crosstalk voltage from a measured or specified dimensionless near-end coupling coefficient and aggressor voltage; this is not a cable-geometry prediction.

• Decibel Voltage Ratio Calculator

  Compute an amplitude ratio in decibels across equal impedances, dB = 20 * log10(V2 / V1); a tenfold voltage increase is +20 dB.