AD9215 datasheet(10/37 Pages) AD

10 / 37 page

Data Sheet

AD9215

Rev. B | Page 9 of 36

with the supply at its maximum limit.

Signal-to-Noise and Distortion (SINAD) Ratio

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

nal 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 zero error and gain error specifies the

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

TMIN or TMAX.

Total Harmonic Distortion (THD)

THD is the ratio of the rms sum of the first six harmonic com-

ponents to the rms value of the measured input signal and is

expressed as a percentage or in decibels.

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).

AD9215 Datasheet(PDF) 10 Page - Analog Devices