Datasheet

LTC2411/LTC2411-1
28
APPLICATIO S I FOR ATIO
WUUU
Figure 23. Resolution (Noise
RMS
≤ 1LSB)
vs Output Data Rate and Temperature
OUTPUT DATA RATE (READINGS/SEC)
16
RESOLUTION (BITS)
18
20
22
17
19
21
20 40 60 80
2411 F23
10010030507090
T
A
= 85°C
V
CC
= 5V
V
REF
= 5V
V
INCM
= 2.5V
V
IN
= 0V
F
O
= EXT OSC
RES = LOG
2
(V
REF
/NOISE
RMS
)
T
A
= 25°C
Figure 24. Resolution (INL
RMS
≤ 1LSB)
vs Output Data Rate and Temperature
OUTPUT DATA RATE (READINGS/SEC)
10
RESOLUTION (BITS)
14
18
22
12
16
20
20 40 60 80
2411 F24
10010030507090
T
A
= 85°C
V
CC
= 5V
V
REF
= 5V
V
INCM
= 2.5V
V
IN
= 0V
F
O
= EXT OSC
RES = LOG
2
(V
REF
/INL
MAX
)
T
A
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
–50
+FS ERROR (ppm OF V
REF
)
50
150
250
0
100
200
20 40 60 80
2411 F21
10010030507090
T
A
= 85°C
V
CC
= 5V
V
REF
= 5V
IN
+
= 3.75V
IN
–
= 1.25V
F
O
= EXT OSC
T
A
= 25°C
Figure 21. +FS Error vs Output Data Rate and Temperature
Figure 22. –FS Error vs Output Data Rate and Temperature
OUTPUT DATA RATE (READINGS/SEC)
0
–FS ERROR (ppm OF V
REF
)
0
50
100
40
2411 F22
–50
–100
–150
10
20
30
50 60 70 80 90 100
T
A
= 85°C
V
CC
= 5V
V
REF
= 5V
IN
+
= 1.25V
IN
–
= 3.75V
F
O
= EXT OSC
T
A
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
0
–120
OFFSET ERROR (ppm OF V
REF
)
–80
–40
0
60 70 80 90
120
2411 F20
10 20 30 40 50 100
40
80
V
CC
= 5V
V
REF
= 5V
V
INCM
= 2.5V
V
IN
= 0V
F
O
= EXT OSC
T
A
= 85°C
T
A
= 25°C
Figure 20. Offset Error vs Output Data Rate and Temperature
Figure 25. Offset Error vs Output
Data Rate and Reference Voltage
OUTPUT DATA RATE (READINGS/SEC)
–120
OFFSET ERROR (ppm OF V
REF
)
–60
–20
40
–80
–100
–40
20
0
20 40 60 80
2411 F25
10010030507090
V
CC
= 5V
REF
–
= GND
V
INCM
= 2.5V
V
IN
= 0V
F
O
= EXT OSC
T
A
= 25°C
V
REF
= 2.5V
V
REF
= 5V