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.

Bits

Required integer input.

Calculate the theoretical signal-to-noise ratio limit of an ideal quantizer in decibels. 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]

Quantization SNR

The resulting quantization snr returned as a number.

• Ideal quantization-noise formulas assume a suitable full-scale signal, uniform quantizer, and error sufficiently uncorrelated with the input. Dither, overload, nonlinearity, coding, input distribution, oversampling, and bandwidth change actual noise and SNR.
• 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.

• Ideal ADC SNR

  Estimate ideal full-scale sine-wave signal-to-quantization-noise ratio as 6.02N+1.76 dB. Oversampling, thermal noise, distortion, and reduced input amplitude are not included.

• Jitter SNR Limit

  Calculate the signal-to-noise ratio ceiling imposed by sampling clock aperture jitter.

• 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.