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.

Bandwidth (MHz)

Required number input.

Compute the Gaussian response rise time as 350 / bandwidth in MHz giving nanoseconds. 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]

Rise time (ns)

The resulting rise time 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.

• BW From Rise Time

  Compute the Gaussian rule bandwidth as 350 / rise time in nanoseconds giving MHz.

• Audio Limiter Attack Time

  First-order limiter envelope attack time constant from observed 10% and 90% response-crossing times.

• I2C Pullup Max

  Compute the maximum I2C pull-up resistance from the bus rise time and total bus capacitance using Rp(max) = trise / (0.8473 x Cb).