Datasheet

Data Sheet ADAS3022
Rev. B | 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 (V
REF
) measured
at T
MIN
, T (25°C), and T
MAX
. The value is expressed in ppm/°C as
6
10
)–()(
)(–)(
)Cppm/( ×
×°
=°
MIN
MAX
REF
REFREF
REF
TTC25V
MinVMaxV
TCV
where:
V
REF
(Max) is the maximum reference output voltage at T
MIN
,
T (25°C), or T
MAX
.
V
REF
(Min) is the minimum reference output voltage at T
MIN
,
T (25°C), or T
MAX
.
V
REF
(25°C) is the reference output voltage at 25°C.
T
MAX
= +85°C.
T
MIN
= −40°C.