SINADR explained

Signal-to-noise and distortion ratio (SINADR^[1]) is a measurement of the purity of a signal. SINADR is typically used in data converter specifications. SINADR is defined as:

SINADR = (P _{signal})/(P _{quantizationError} + P _{randomNoise} + P _{distortion}) where P is the average power of the signal, quantization error, random noise and distortion components. SINADR is usually expressed in dB. SINADR is a standard metric for analog-to-digital converter and digital-to-analog converter.

SINADR (in dB) is related to effective number of bits (ENOB) by the following equation:

SINADR = ENOB ⋅ 6 . 02 + 1 . 76

See also

• Signal-to-noise ratio

Notes and References

1. Evaluation of signal-to-noise and distortion ratio degradation in nonlinear systems . IEEE Transactions on Microwave Theory and Techniques. March 2004 . 52 . 3 . 813–822 . 10.1109/TMTT.2004.823543 . 0018-9480. Lavrador . P.M. . Borgesdecarvalho . N. . Pedro . J.C. . 2004ITMTT..52..813L .