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.

Closed-loop gain

Required number input.

Bandwidth (Hz)

Required number input.

Calculate the gain-bandwidth product required for a design. 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]

Gain-bandwidth product (Hz)

The resulting gain-bandwidth product returned as a number.

• Amplifier gain and rejection calculations are small-signal approximations unless the operating point is checked. Gain-bandwidth, slew rate, input and output range, stability, noise, offset, bias current, loading, and frequency-dependent CMRR can limit the result.
• 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.

• Bandwidth From GBW

  Calculate bandwidth from a gain-bandwidth product.

• Ferrite Core Area Product

  Estimate required ferrite core window-area × cross-section from the Magnetics design form WaAc=Pout·Dcma/(Kt·Bmax·f). Enter circular-mils-per-ampere current-density allowance, gauss, hertz, and the topology constant from the same design method; output is cm⁴.

• ADC Quantization Error Bound

  Calculate the ideal rounding quantizer's maximum absolute error as half an ADC LSB. Assumes a uniform quantizer and input within the conversion range; offset, gain, and noise errors are excluded.