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APPLICATION INFORMATION

DEFINITIONS OF SPECIFICATIONS AND TERMINOLOGY

Integral Nonlinearity (INL)

Differential Nonlinearity (DNL)

Signal-to-Noise Ratio + Distortion (S/N+D)

Spurious Free Dynamic Range (SFDR)

Total Harmonic Distortion (THD)

TLV5619

SLAS172F – DECEMBER 1997 – REVISED FEBRUARY 2004

The relative accuracy or integral nonlinearity (INL), sometimes referred to as linearity error, is the maximum

deviation of the output from the line between zero and full scale excluding the effects of zero code and full-scale

errors.

The differential nonlinearity (DNL), sometimes referred to as differential error, is the difference between the

measured and ideal 1 LSB amplitude change of any two adjacent codes. Monotonic means the output voltage

changes in the same direction (or remains constant) as a change in the digital input code.

Zero-scale error is defined as the deviation of the output from 0 V at a digital input value of 0.

Gain error is the error in slope of the DAC transfer function.

S/N+D is the ratio of the rms value of the output signal to the rms sum of all other spectral components below the

Nyquist frequency, including harmonics but excluding dc. The value for S/N+D is expressed in decibels.

SFDR is the difference between the rms value of the output signal and the rms value of the largest spurious

signal within a specified bandwidth. The value for SFDR is expressed in decibels.

THD is the ratio of the rms sum of the first six harmonic components to the rms value of the fundamental signal

and is expressed in decibels.

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