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.

Energy per refresh (J)

Required number input.

Refresh rate (Hz)

Required number input.

Estimate only the dynamic energy-per-frame component of display power from measured refresh energy and refresh 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]

Dynamic refresh power (W)

The resulting dynamic refresh power returned as a number.

• Display brightness, contrast, pixel density, refresh power, and backlight current depend on panel mode, measurement pattern, viewing angle, ambient light, transfer function, refresh behavior, and power-management state. Nominal specifications may use different test methods.
• 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.

• Display Backlight Current

  Calculate average backlight supply current from measured electrical power and supply voltage.

• Video Frame Rate

  Frame rate from pixel clock, total pixels per line and total lines per frame, including blanking.

• ADC Spurious-Free Dynamic Range

  Compute SFDR in dBc as 20log₁₀(fundamental RMS amplitude/largest spur RMS amplitude), excluding DC. Use amplitudes measured in the same unit from one spectrum.