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.

Resonant frequency (Hz)

Required number input.

Quality factor

Required number input.

Calculate the bandwidth of a resonant circuit from its resonant frequency and quality factor. 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]

Bandwidth (Hz)

The resulting bandwidth returned as a number.

• Bandwidth-to-Q relationships usually assume a lightly coupled, approximately second-order resonance and a specified bandwidth convention. Loading, multiple resonances, loss variation, and measurement method can change the inferred Q.
• 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.

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