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.

Tone power (dBm)

Required number input.

IM3 product (dBm)

Required number input.

Compute the output third-order intercept point as IP3(dBm) = P(dBm) + (P(dBm) - IM3(dBm)) / 2 from a single tone level and its IM3 product. 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]

IP3 (dBm)

The resulting ip3 returned as a number.

• Compact electronics formulas omit some combination of tolerances, temperature drift, bandwidth, loading, parasitics, noise spectrum, nonlinearity, clipping, calibration, layout, and device-specific limits. Typical datasheet values are not guaranteed limits.
• 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.

• Mixer IP3

  Extrapolate the third-order intercept point of a mixer from one tone level and its measured third-order intermodulation product.

• Mixer IP3

  Input third-order intercept extrapolated from two-tone fundamental and intermodulation output levels.

• LNA Input IP3

  LNA input third-order intercept extrapolated from two-tone fundamental and third-order intermodulation levels.