Datasheet

LTC2430/LTC2431
28
24301f
APPLICATIO S I FOR ATIO
WUUU
Figure 23. Resolution (Noise
RMS
≤ 1LSB)
vs Output Data Rate and Temperature
Figure 24. Resolution (INL
RMS
≤ 1LSB)
vs Output Data Rate and Temperature
Figure 21. +FS Error vs Output Data Rate and Temperature
Figure 22. –FS Error vs Output Data Rate and Temperature
Figure 20. Offset Error vs Output Data Rate and Temperature
Figure 25. Offset Error vs Output
Data Rate and V
CC
OUTPUT DATA RATE (READINGS/SEC)
0
OFFSET ERROR (ppm OF V
REF
)
6
8
10
80
2431 F20
4
2
5
7
9
3
1
0
20
40
60
10 90
30
50
70
100
V
INCM
= V
REFCM
V
CC
= V
REF
= 5V
V
IN
= 0V
F
O
= EXT OSC
T
A
= 85°C
T
A
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
0
–30
+FS ERROR (ppm OF V
REF
)
–25
–15
–10
–5
5
10
50
70
2431 F21
–20
0
40
90
100
20
30
60 80
V
INCM
= V
REFCM
V
CC
= V
REF
= 5V
F
O
= EXT OSC
T
A
= 85°C
T
A
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
0
–5
–FS ERROR (ppm OF V
REF
)
0
10
15
20
30
10
50
70
2431 F22
5
25
40
90
100
20
30
60 80
V
INCM
= V
REFCM
V
CC
= V
REF
= 5V
F
O
= EXT OSC
T
A
= 85°C
T
A
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
0
15
RESOLUTION (BITS)
16
18
19
20
22
10
50
70
2431 F23
17
21
40
90
100
20
30
60 80
V
INCM
= V
REFCM
V
CC
= V
REF
= 5V
V
IN
= 0V
F
O
= EXT OSC
REF
–
= GND
RES = LOG
2
(V
REF
/NOISE
RMS
)
T
A
= 85°C
T
A
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
0
15
RESOLUTION (BITS)
16
18
19
20
22
10
50
70
2430 F24
17
21
40
90
100
20
30
60 80
V
INCM
= V
REFCM
V
CC
= V
REF
= 5V
F
O
= EXT OSC
REF
–
= GND
RES = LOG
2
(V
REF
/INL
MAX
)
T
A
= 85°C
T
A
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
10
OFFSET ERROR (ppm OF V
REF
)
1
3
5
90
2431 F25
–1
–3
0
2
4
–2
–4
–5
30
50
70
200 100
40
60
80
V
INCM
= V
REFCM
V
IN
= 0V
REF
–
= GND
F
O
= EXT OSC
T
A
= 25°C
V
CC
= V
REF
= 5V
V
CC
= 2.7V
V
REF
= 2.5V