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.

Signal frequency

Required number input.

Sample rate

Required number input.

Calculate the aliased frequency produced by sampling a signal above the Nyquist limit. 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]

Alias frequency

The resulting alias frequency returned as a number.

• A folded-frequency result assumes a known sampling rate and spectral component. Real aliasing also depends on sampling-clock error, aperture effects, input bandwidth, spectral images, and analog anti-alias filtering.
• 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.

• Jitter SNR Limit

  Calculate the signal-to-noise ratio ceiling imposed by sampling clock aperture jitter.

• Nyquist Rate

  Calculate the minimum sampling rate for perfect reconstruction of a bandlimited signal.

• Nyquist Frequency

  Calculate the highest frequency that can be represented without aliasing at a given sample rate.