AD9289BBC datasheet(14/33 Pages) AD

14 / 33 page

AD9289

Rev. 0 | Page 13 of 32

Offset Matching

Expressed in mV. Computed using the following equation:

OffsetMatching = OFFMAX − OFFMIN

where OFFMAX is the most positive offset error and OFFMIN is the

most negative offset error.

Out-of-Range Recovery Time

Out-of-range recovery time is the time it takes for the ADC to

reacquire the analog input after a transient from 10% above

positive full scale to 10% above negative full scale, or from 10%

below negative full scale to 10% below positive full scale.

Output Propagation Delay

The delay between the clock logic threshold and the time when

all bits are within valid logic levels.

Signal-to Noise and Distortion (SINAD) Ratio

SINAD is the ratio of the rms value of the measured input

signal to the rms sum of all other spectral components below

the Nyquist frequency, including harmonics but excluding dc.

The value for SINAD is expressed in decibels.

Signal-to-Noise Ratio (SNR)

SNR is the ratio of the rms value of the measured input signal to

the rms sum of all other spectral components below the Nyquist

frequency, excluding the first six harmonics and dc. The value

for SNR is expressed in decibels.

Spurious-Free Dynamic Range (SFDR)

SFDR is the difference in dB between the rms amplitude of the

input signal and the peak spurious signal.

Temperature Drift

The temperature drift for offset error and gain error specifies

the maximum change from the initial (25°C) value to the value

at TMIN or TMAX.

Two-Tone SFDR

The ratio of the rms value of either input tone to the rms value

of the peak spurious component. The peak spurious component

may or may not be an IMD product. It may be reported in dBc

(i.e., degrades as signal levels are lowered) or in dBFS (always

related back to converter full scale).

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