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.

Clock Hertz (Hz)

Required number input.

Accumulator Bits (bits)

Required integer input.

Numerically controlled oscillator frequency step for a given clock and phase accumulator width. 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]

Resolution Hertz (Hz)

The resulting resolution hertz 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.

• Direct Digital Synthesis Frequency

  DDS output frequency from an integer tuning word, system clock and phase accumulator bit width.

• Phase Shift Oscillator

  Compute the oscillation frequency of an RC phase-shift oscillator f = 1 / (2 * pi * sqrt(6) * R * C).

• PWM Resolution Bits

  Compute the PWM resolution in bits from the clock frequency and the PWM frequency.