Texas Instruments ADS869 Series, Manual

Page: 14 / 78

0
20
40
60
80
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3
N
u
m
b
e
r
o
f
D
e
v
ic
e
s
Offset Drift (ppm/
o
C)
C025
-1
-0.75
-0.5
-0.25
0
0.25
0.5
0.75
1
±
40
±
7 26 59 92 125
O
ff
s
e
t
E
rr
o
r
(m
V
)
Free-Air Temperature (
o
C)
C026
......CH0 , .......CH1 , ......CH2 ,
.......CH3 , ......CH4 , .......CH5 ,
........CH6 , .......CH7
±
2
±
1
0
1
2
±
40
±
7 26 59 92 125
In
te
g
ra
l
N
o
n
lin
e
a
ri
ty
(
L
S
B
)
Free-Air Temperature (
o
C)
C022
Maximum
Minimum
-1
-0.75
-0.5
-0.25
0
0.25
0.5
0.75
1
±
40
±
7 26 59 92 125
O
ff
s
e
t
E
rr
o
r
(m
V
)
Free-Air Temperature (
o
C)
C024
----- ± 2.5*V
REF
----- “ 1.25*V
REF
-----
“
0.625*V
REF
----- + 2.5*V
REF
-----+1.25*V
REF
±
2
±
1
0
1
2
±
40
±
7
26 59 92 125
In
te
g
ra
l
N
o
n
lin
e
a
ri
ty
(
L
S
B
)
Free-AirTemperature (
o
C)
C020
Maximum
Minimum
±
2
±
1
0
1
2
±
40
±
7 26 59 92 125
In
te
g
ra
l
N
o
n
lin
e
a
ri
ty
(
L
S
B
)
Free-Air Temperature (
o
C)
C021
Maximum
Minimum
ADS8694, ADS8698
SBAS686 – JULY 2015 www.ti.com
Typical Characteristics (continued)
At T
A
= 25°C, AVDD = 5 V, DVDD = 3 V, internal reference V
REF
= 4.096 V, and f
SAMPLE
= 500 kSPS, unless otherwise noted.
Range = 2.5 × V
REF
Range = ±0.625 × V
REF
Figure 21. INL vs Temperature (2.5 × V
REF
)
Figure 20. INL vs Temperature (±0.625 × V
REF
)
Range = 1.25 × V
REF
Figure 22. INL vs Temperature (1.25 × V
REF
) Figure 23. Offset Error vs
Temperature Across Input Ranges
Range = ±2.5 × V
REF
Range = ±2.5 × V
REF
Figure 24. Typical Histogram for Offset Drift Figure 25. Offset Error vs Temperature Across Channels
14 Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: ADS8694 ADS8698