Sinad to enob – sinad calculator & sinad adc

Sinad to enob – sinad calculator & sinad adc

This calculator converts the signal-to-noise and distortion ratio (SINAD) expressed in dB into the effective number of bits (ENOB). It allows you to evaluate the accuracy and quality of an analog-to-digital converter (ADC) based on its noise and distortion level.

Useful tool for electronic engineers, digital system designers and technicians working on ADC performance characterization and validation.

dB

Formula

ENOB = (SINAD – 1.76) / 6.02

Explanation of the formula

  • SINAD (Signal-to-Noise and Distortion Ratio) measures the overall quality of a digitized signal, incorporating noise and distortion.
  • ENOB indicates the actual number of usable bits of a converter taking imperfections into account.
  • Each one-bit increase in the ENOB corresponds to an improvement of approximately 6 dB in the SINAD ratio.

Example: 74 dB SINAD to ENOB conversion

Input : SINAD = 74 dB

Output : ENOB ≈ 11.97 bits

Benefits and uses

  • Allows you to estimate the effective resolution of an ADC converter.
  • Facilitates comparison between different components and architectures.
  • Essential tool for the design and optimization of measurement and digital signal processing systems.
  • Useful in testing and calibration of electronic instruments.