Datasheet

LTC2494
35
2494fd
applications inForMation
Figure 37. Resolution (Noise
RMS
≤ 1LSB)
vs Output Data Rate and Reference Voltage
Figure 38. Resolution (INL
MAX
≤ 1LSB) vs
Output Data Rate and Reference Voltage
Figure 36. Offset Error vs Output Data
Rate and Reference Voltage
Figure 33.–FS Error vs Output Data
Rate and Temperature
Figure 34. Resolution (Noise
RMS
≤ 1LSB)
vs Output Data Rate and Temperature
Figure 35. Resolution (INL
MAX
≤ 1LSB)
vs Output Data Rate and Temperature
Figure 31. Offset Error vs Output Data
Rate and Temperature
Figure 32. +FS Error vs Output Data
Rate and Temperature
OUTPUT DATA RATE (READINGS/SEC)
–10
OFFSET ERROR (ppm OF V
REF
)
10
30
50
0
20
40
20 40 60 80
2494 F31
100100 30 50 70 90
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
0
+FS ERROR (ppm OF V
REF
)
500
1500
2000
2500
3500
10
50
70
2494 F32
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
–3500
–FS ERROR (ppm OF V
REF
)
–3000
–2000
–1500
–1000
0
10
50
70
2494 F33
–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
–10
OFFSET ERROR (ppm OF V
REF
)
–5
5
10
20
10
50
70
2494 F36
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
2494 F34
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
)
2494 F35
OUTPUT DATA RATE (READINGS/SEC)
0
10
RESOLUTION (BITS)
12
16
18
10
50
70
2494 F37
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
= 2.5V, 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
)
2494 F38