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.

Source Resistance (Ω) (Ω)

Required number input.

Switch Resistance (Ω) (Ω)

Required number input.

Hold Capacitance (F) (F)

Required number input.

Remaining Error Fraction

Required number input.

Estimate sample-and-hold acquisition time for first-order RC settling to a specified remaining error fraction after a voltage step. 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]

Acquisition (s) (s)

The resulting acquisition (s) returned as a number.

• Acquisition and droop estimates depend on source impedance, switch resistance, hold capacitance, leakage, dielectric absorption, aperture error, settling criterion, temperature, and downstream loading. Datasheet acquisition time may assume a particular source and accuracy target.
• 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.

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