ADAS3022 datasheet(21/40 Pages) AD

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Data Sheet

ADAS3022

Rev. A | Page 21 of 40

Total Harmonic Distortion (THD)

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

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

expressed in decibels.

Spurious-Free Dynamic Range (SFDR)

SFDR is the difference, expressed in decibels, between the rms

amplitude of the input signal and the peak spurious signal.

Channel-to-Channel Crosstalk

Channel-to-channel crosstalk is a measure of the level of crosstalk

between any channel and all other channels. The crosstalk is

measured by applying a dc input to the channel under test and

applying a full-scale, 10 kHz sine wave signal to all other channels.

The crosstalk is the amount of signal that leaks into the test channel

and is expressed in decibels.

Reference Voltage Temperature Coefficient

Reference voltage temperature coefficient is derived from the

typical shift of output voltage at 25°C on a sample of parts at the

maximum and minimum reference output voltage (VREF) measured

at TMIN, T (25°C), and TMAX. The value is expressed in ppm/°C as

)

–

(

)

(

)

(

–

)

(

)

ppm/

(

MIN

MAX

REF

Min

Max

TCV

where:

VREF (Max) is the maximum reference output voltage at TMIN,

T (25°C), or TMAX.

VREF (Min) is the minimum reference output voltage at TMIN,

T (25°C), or TMAX.

VREF (25°C) is the reference output voltage at 25°C.

TMAX = +85°C.

TMIN = −40°C.

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