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.

Emphasized amplitude (V)

Required number input.

Baseline amplitude (V)

Required number input.

Express transmitted pre-emphasized signal amplitude relative to the baseline amplitude in voltage decibels. 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]

Pre-emphasis (dB)

The resulting pre-emphasis returned as a number.

• Signal-integrity estimates depend on edge rate, channel loss, impedance discontinuities, termination, encoding, equalization, clock recovery, jitter decomposition, crosstalk, connectors, vias, and receiver masks. Aggregate budgets must use compatible statistical or worst-case conventions.
• 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.

• De Emphasis Db

  Express reduction from reference amplitude to de-emphasized amplitude as a positive voltage attenuation in decibels.

• Fingerprint Sensor SNR

  Express a fingerprint sensor's measured RMS image-signal amplitude divided by RMS noise as voltage SNR in decibels.

• 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.