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.

Sample rate

Required number input.

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

Nyquist frequency

The resulting nyquist frequency returned as a number.

• The Nyquist criterion assumes a band-limited continuous signal and an ideal sampling model. Real systems need transition bandwidth, anti-alias filtering, clock quality, aperture behavior, and spectral guard bands; sampling exactly twice the highest nominal frequency is rarely sufficient.
• 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.

• CAN Bus Load Percentage

  Calculate measured CAN bus utilization from total transmitted on-wire bits, link bit rate, and observation duration; bit stuffing must already be counted.

• Alias Frequency

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

• Battery State Of Health

  Calculate battery state of health as measured full-charge capacity divided by rated new capacity, expressed as a percentage; values over 100% can be valid measurements.