TLV5638

2.7 V TO 5.5 V LOW POWER DUAL 12-BIT DIGITAL-TO-ANALOG

CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN

SLAS225A – JUNE 1999 – REVISED JANUARY 2000

15

POST OFFICE BOX 655303

APPLICATION INFORMATION

definitions of specifications and terminology

integral nonlinearity (INL)

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.

differential nonlinearity (DNL)

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.

total harmonic distortion (THD)

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

The value for THD is expressed in decibels.

signal-to-noise ratio + distortion (S/N+D)

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.

spurious free dynamic range (SFDR)

Spurious free dynamic range 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.