LTC2488 LINER [Linear Technology], LTC2488 Datasheet - Page 26

• Manufacturer Part Number: LTC2488
• Description: 16-Bit 2-/4-Channel ?? ADC with Easy Drive Input Current Cancellation
• Manufacturer: LINER [Linear Technology]

APPLICATIONS INFORMATION
LTC2488
26
Figure 23. Resolution (Noise
vs Output Data Rate and Temperature
–10
18
16
14
10
12
50
40
30
20
10
0
Figure 20. Offset Error vs Output Data
Rate and Temperature
0
0
V
V
V
F
V
V
V
F
RES = LOG 2 (V
O
O
IN(CM)
CC
IN
IN(CM)
CC
IN
10
10
OUTPUT DATA RATE (READINGS/SEC)
= EXT CLOCK
OUTPUT DATA RATE (READINGS/SEC)
= EXT CLOCK
= 0V
= 0V
= V
= V
20 30
20
REF
REF
= V
= V
REF(CM)
= 5V
REF(CM)
30
= 5V
T
REF
T
40
40
A
A
Figure 26. Resolution (Noise
vs Output Data Rate and Reference
Voltage
= 85°C
18
14
10
16
12
= 25°C
/NOISE
50
50
0
T
V
V
F
T
RES = LOG 2 (V
O
A
IN(CM)
IN
A
60
60
10
RMS
= 25°C, 85°C
= EXT CLOCK
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
= 0V
)
70
70
20 30
= V
RMS
80
REF(CM)
80
≤ 1LSB)
REF
90 100
90
2488 F23
V
40
2488 F20
CC
/NOISE
100
= 5V, V
50
60
RMS
REF
)
70
= 5V, 2.5V
3500
3000
2000
1000
2500
1500
500
RMS
18
16
14
10
12
80
Figure 24. Resolution (INL
vs Output Data Rate and Temperature
0
Figure 21. +FS Error vs Output Data
Rate and Temperature
0
0
V
V
F
RES = LOG 2 (V
V
V
F
90 100
≤ 1LSB)
2488 F26
O
O
IN(CM)
CC
IN(CM)
CC
10
10
= EXT CLOCK
= EXT CLOCK
OUTPUT DATA RATE (READINGS/SEC)
OUTPUT DATA RATE (READINGS/SEC)
= V
= V
20 30
20 30
REF
REF
= V
= V
REF(CM)
REF(CM)
= 5V
= 5V
REF
T
T
40
40
A
A
/INL
= 85°C
= 85°C
50
50
MAX
60
60
)
70
70
T
A
MAX
18
14
10
Figure 27. Resolution (INL
vs Output Data Rate and Reference
Voltage
16
12
T
= 25°C
A
80
80
= 25°C
0
V
V
V
REF
F
T
RES = LOG 2 (V
≤ 1LSB)
O
CC
A
IN(CM)
IN
90 100
90 100
10
2488 F21
2488 F24
= EXT CLOCK
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
= 0V
–
= 5V, V
= GND
20 30
= V
REF
REF(CM)
= 2.5V
REF
–1000
–1500
–2000
–2500
–3500
–3000
40
–500
/INL
–10
Figure 22.–FS Error vs Output Data Rate
and Temperature
20
15
10
–5
50
0
5
0
Figure 25. Offset Error vs Output Data
Rate and Reference Voltage
MAX
0
0
V
V
F
T
V
V
F
60
O
A
O
IN(CM)
IN
V
IN(CM)
CC
)
10
10
CC
= EXT CLOCK
OUTPUT DATA RATE (READINGS/SEC)
= 25°C
= EXT CLOCK
OUTPUT DATA RATE (READINGS/SEC)
= 0V
= V
70
= V
MAX
20 30
20 30
REF
V
= V
= V
REF
CC
80
REF(CM)
REF(CM)
= 5V
= 5V, V
≤ 1LSB)
= 5V
T
90 100
2488 F27
A
40
40
= 85°C
REF
V
50
CC
50
= 2.5V
= V
60
60
REF
T
A
70
70
= 5V
= 25°C
80
80
90 100
90 100
2488 F22
2488 F25
2488f