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.

Compressed Output Dbm (dBm)

Required number input.

Small Signal Gain Db (dB)

Required number input.

Input power at the measured one-decibel gain compression point from output power and small-signal gain. 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]

Input P1db Dbm (dBm)

The resulting input p1db dbm returned as a number.

• RF gain, noise, compression, intercept, mismatch, sensitivity, and link calculations require consistent impedance, bandwidth, frequency, reference plane, temperature, modulation, and cascade ordering. Datasheet values at different conditions cannot be combined without correction.
• 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.

• PA Backoff Efficiency

  Drain efficiency at a power-backoff operating point from RF output and DC input power.

• PA Saturated Power

  RF output power at an observed saturated operating point from measured sinusoidal RMS output voltage into a resistive load.

• Audio Compressor Threshold

  Recover the static compressor threshold from one above-threshold input/output level pair and a known compression ratio R:1.