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.

Non-inverting input (V)

Required number input.

Inverting input (V)

Required number input.

Compute the signed differential input voltage as V+ minus V-. 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]

Differential voltage (V)

The resulting differential voltage 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.

• Comparator Input Offset Voltage

  Measure signed comparator input offset as the observed switching input voltage minus the nominal reference voltage.

• Offset Drift

  Compute the signed input offset voltage drift as delta Voffset(uV) / delta T(degC); the temperature interval must not be zero.

• LDO Dropout Headroom

  Compute LDO dropout headroom as input minus the sum of output and dropout voltages; negative values indicate insufficient headroom.