LTC2497 Linear Technology, LTC2497 Datasheet - Page 26

• Manufacturer Part Number: LTC2497
• Description: 16-Bit 8-/16-Channel ADC
• Manufacturer: Linear Technology

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LTC2497
APPLICATIONS INFORMATION
26
–10
50
40
30
20
10
18
14
10
16
12
0
0
Figure 20. Offset Error vs Output Data
Rate and Temperature
0
Figure 23. Resolution (Noise
vs Output Data Rate and Temperature
V
V
V
F
V
V
V
F
RES = LOG 2 (V
O
IN(CM)
CC
IN
O
IN(CM)
CC
IN
10
10
= EXT CLOCK
OUTPUT DATA RATE (READINGS/SEC)
OUTPUT DATA RATE (READINGS/SEC)
= EXT CLOCK
= 0V
= V
= 0V
= V
20 30
20
REF
REF
= V
= V
REF(CM)
= 5V
30
REF(CM)
= 5V
T
T
REF
40
40
A
A
= 85°C
T
= 25°C
/NOISE
A
50
50
= 25°C, 85°C
18
14
10
16
12
60
0
60
Figure 26. Resolution (Noise
vs Output Data Rate and Temperature
RMS
V
V
F
T
RES = LOG 2 (V
O
A
IN(CM)
IN
10
= EXT CLOCK
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
70
70
= 0V
)
20 30
= V
80
80
REF(CM)
RMS
90
90 100
2497 F20
2497 F23
REF
V
40
100
CC
≤ 1LSB)
/NOISE
= 5V, V
50
60
RMS
REF
3500
3000
2500
2000
1500
1000
500
)
70
18
16
14
10
12
0
= 2.5V, 5V
0
Figure 21. +FS Error vs Output Data
Rate and Temperature
Figure 24. Resolution (INL
vs Output Data Rate and Temperature
0
80
V
V
F
RES = LOG 2 (V
V
V
F
O
O
IN(CM)
CC
IN(CM)
CC
10
10
RMS
OUTPUT DATA RATE (READINGS/SEC)
= EXT CLOCK
= EXT CLOCK
OUTPUT DATA RATE (READINGS/SEC)
90 100
= V
= V
2497 F26
20 30
20 30
REF
REF
= V
= V
≤ 1LSB)
REF(CM)
REF(CM)
= 5V
= 5V
REF
T
T
40
40
A
A
/INL
= 85°C
= 85°C
50
50
MAX
60
60
)
70
T
70
A
18
16
14
10
12
T
= 25°C
A
80
80
MAX
Figure 27. Resolution (INL
vs Output Data Rate and Temperature
0
= 25°C
V
V
V
REF
F
T
RES = LOG 2 (V
O
CC
IN(CM)
IN
A
10
90 100
90 100
= EXT CLOCK
= 25°C
2497 F21
OUTPUT DATA RATE (READINGS/SEC)
2497 F24
–
≤ 1LSB)
= 0V
= 5V, V
= GND
20 30
= V
REF
REF(CM)
= 2.5V
REF
40
–1000
–1500
–2000
–2500
–3000
–3500
–500
–10
/INL
20
15
10
–5
50
5
0
0
MAX
Figure 22.–FS Error vs Output Data
Rate and Temperature
0
0
Figure 25. Offset Error vs Output
Data Rate and Temperature
V
V
F
V
V
F
T
60
O
O
A
IN(CM)
CC
IN(CM)
IN
V
10
)
10
OUTPUT DATA RATE (READINGS/SEC)
= EXT CLOCK
CC
= EXT CLOCK
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
= 0V
= V
70
= V
20 30
20 30
REF
V
= V
= V
REF
CC
MAX
80
REF(CM)
REF(CM)
= 5V
= 5V, V
= 5V
T
90 100
≤ 1LSB)
2497 F27
A
40
40
= 85°C
REF
V
50
CC
50
= 2.5V
= V
60
60
REF
T
A
70
70
= 25°C
= 5V
80
80
90 100
90 100
2497 F22
2497 F25
2497f