AD4134 datasheet(28/92 Pages) AD

28 / 92 page

Data Sheet

AD4134

TERMINOLOGY

analog.com

Rev. 0 | 28 of 92

Spurious-Free Dynamic Range (SFDR)

SFDR is the difference, in decibels, between the rms amplitude of

the input signal and the peak spurious signal (excluding the first five

harmonics).

Total Harmonic Distortion (THD)

THD is the ratio of the rms sum of the first five harmonic compo-

nents to the rms value of a full-scale input signal and is expressed

in decibels.

Offset Error

Offset error is the difference between the ideal midscale input

voltage (0 V) and the actual voltage producing the midscale output

code.

Offset Error Drift

Offset error drift is the ratio of the offset error change due to

a temperature change of 1°C. For this calculation, observe the

change in output code when the temperature varies over the full

range and take the ratio. Offset error drift is expressed in microvolts

per degree Celsius.

Crosstalk

Crosstalk is measured as tone amplitude observed at Frequency X

on Channel 1 when Channel 0 and Channel 2 are driven simultane-

ously with a full-scale tone at Frequency X.

Overall Group Delay

Overall group delay is the total latency of the AD4134 that a signal

experiences. This latency includes group delays of all the elements,

such as modulator, ASRC, digital filter, and various other digital

interface delays.

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