Datasheet
LTC2488
27
2488fa
OUTPUT DATA RATE (READINGS/SEC)
–10
OFFSET ERROR (ppm OF V
REF
)
10
30
50
0
20
40
20 40 60 80
2488 F20
10010030507090
V
IN(CM)
= V
REF(CM)
V
CC
= V
REF
= 5V
V
IN
= 0V
F
O
= EXT CLOCK
T
A
= 85°C
T
A
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
0
–3500
–FS ERROR (ppm OF V
REF
)
–3000
–2000
–1500
–1000
0
10
50
70
2488 F22
–2500
–500
40
90
100
20
30
60 80
V
IN(CM)
= V
REF(CM)
V
CC
= V
REF
= 5V
F
O
= EXT CLOCK
T
A
= 85°C
T
A
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
0
0
+FS ERROR (ppm OF V
REF
)
500
1500
2000
2500
3500
10
50
70
2488 F21
1000
3000
40
90
100
20
30
60 80
V
IN(CM)
= V
REF(CM)
V
CC
= V
REF
= 5V
F
O
= EXT CLOCK
T
A
= 85°C
T
A
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
0
10
RESOLUTION (BITS)
12
16
18
10
50
70
2488 F23
14
40
90
100
20
30
60 80
V
IN(CM)
= V
REF(CM)
V
CC
= V
REF
= 5V
V
IN
= 0V
F
O
= EXT CLOCK
RES = LOG 2 (V
REF
/NOISE
RMS
)
T
A
= 25°C, 85°C
OUTPUT DATA RATE (READINGS/SEC)
0
10
RESOLUTION (BITS)
12
16
18
10
50
70
14
40
90
100
20
30
60 80
T
A
= 85°C
T
A
= 25°C
V
IN(CM)
= V
REF(CM)
V
CC
= V
REF
= 5V
F
O
= EXT CLOCK
RES = LOG 2 (V
REF
/INL
MAX
)
2488 F24
APPLICATIONS INFORMATION
Figure 20. Offset Error 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 23. Resolution (Noise
RMS
≤ 1LSB)
vs Output Data Rate and Temperature
Figure 24. Resolution (INL
MAX
≤ 1LSB)
vs Output Data Rate and Temperature
Figure 26. Resolution (Noise
RMS
≤ 1LSB)
vs Output Data Rate and Reference
Voltage
Figure 27. Resolution (INL
MAX
≤ 1LSB)
vs Output Data Rate and Reference
Voltage
OUTPUT DATA RATE (READINGS/SEC)
0
–10
OFFSET ERROR (ppm OF V
REF
)
–5
5
10
20
10
50
70
2488 F25
0
15
40
90
100
20
30
60 80
V
CC
= 5V, V
REF
= 2.5V
V
CC
= V
REF
= 5V
V
IN(CM)
= V
REF(CM)
V
IN
= 0V
F
O
= EXT CLOCK
T
A
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
0
10
RESOLUTION (BITS)
12
16
18
10
50
70
2488 F26
14
40
90
100
20
30
60 80
V
IN(CM)
= V
REF(CM)
V
IN
= 0V
F
O
= EXT CLOCK
T
A
= 25°C
RES = LOG 2 (V
REF
/NOISE
RMS
)
V
CC
= 5V, V
REF
= 5V, 2.5V
OUTPUT DATA RATE (READINGS/SEC)
0
10
RESOLUTION (BITS)
12
16
18
10
50
70
14
40
90
100
20
30
60 80
V
CC
= 5V, V
REF
= 2.5V
V
CC
= V
REF
= 5V
V
IN(CM)
= V
REF(CM)
V
IN
= 0V
REF
–
= GND
F
O
= EXT CLOCK
T
A
= 25°C
RES = LOG 2 (V
REF
/INL
MAX
)
2488 F27
Figure 25. Offset Error vs Output Data
Rate and Reference Voltage