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.

Actual sample rate

Required number input.

Nyquist rate

Required number input.

Calculate how much faster a system samples compared with the minimum Nyquist requirement. 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]

Oversampling ratio

The resulting oversampling ratio 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.

• Nyquist Rate

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

• Ideal ADC SNR

  Estimate ideal full-scale sine-wave signal-to-quantization-noise ratio as 6.02N+1.76 dB. Oversampling, thermal noise, distortion, and reduced input amplitude are not included.

• Alias Frequency

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