LTC2494CUHF-PBF LINER [Linear Technology], LTC2494CUHF-PBF Datasheet - Page 34

• Manufacturer Part Number: LTC2494CUHF-PBF
• Description: 16-Bit 8-/16-Channel ?? ADC with PGA and Easy Drive Input Current Cancellation
• Manufacturer: LINER [Linear Technology]

APPLICATIONS INFORMATION
LTC2494
34
Figure 34. Resolution (Noise
vs Output Data Rate and Temperature
Figure 31. Offset Error vs Output Data
Rate and Temperature
–10
50
40
30
20
10
18
16
14
10
12
0
0
0
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
20 30
REF
= V
REF
= V
REF(CM)
= 5V
30
REF(CM)
= 5V
Figure 37. Resolution (Noise
vs Output Data Rate and Reference
Voltage
T
T
40
REF
A
40
18
16
14
12
10
A
= 85°C
= 25°C
T
/NOISE
A
0
50
50
V
V
F
T
RES = LOG 2 (V
= 25°C, 85°C
O
A
IN(CM)
IN
10
= EXT CLOCK
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
60
= 0V
60
RMS
20 30
= V
70
RMS
)
70
REF(CM)
80
80
≤ 1LSB)
REF
V
40
90
CC
90 100
2494 F31
2494 F34
/NOISE
50
= 5V, V
100
60
RMS
REF
)
70
RMS
= 2.5V, 5V
Figure 35. Resolution (INL
vs Output Data Rate and Temperature
3500
3000
2000
1000
2500
1500
Figure 32. +FS Error vs Output Data
Rate and Temperature
80
500
18
14
10
16
12
≤ 1LSB)
0
0
0
90 100
2494 F37
V
V
F
RES = LOG 2 (V
V
V
F
O
IN(CM)
CC
O
IN(CM)
CC
10
10
= EXT CLOCK
OUTPUT DATA RATE (READINGS/SEC)
= EXT CLOCK
OUTPUT DATA RATE (READINGS/SEC)
= V
= V
20 30
20 30
REF
= V
REF
= V
REF(CM)
= 5V
REF(CM)
= 5V
REF
T
40
T
40
A
A
/INL
= 85°C
= 85°C
50
50
MAX
60
60
)
MAX
70
70
T
Figure 38. Resolution (INL
vs Output Data Rate and Reference
Voltage
A
T
18
14
10
16
12
= 25°C
A
≤ 1LSB)
80
80
= 25°C
0
V
V
V
REF
F
T
RES = LOG 2 (V
O
CC
A
90 100
IN(CM)
IN
90 100
2494 F35
2494 F32
10
= 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
–10
/INL
20
15
10
–5
5
0
50
0
Figure 36. Offset Error vs Output Data
Rate and Reference Voltage
MAX
0
Figure 33.–FS Error vs Output Data
Rate and Temperature
0
V
V
F
T
V
V
F
O
60
A
IN(CM)
IN
O
V
IN(CM)
CC
10
)
10
= EXT CLOCK
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
CC
OUTPUT DATA RATE (READINGS/SEC)
= EXT CLOCK
= 0V
= V
MAX
70
= V
20 30
20 30
V
= V
REF
= V
CC
REF
80
≤ 1LSB)
REF(CM)
REF(CM)
= 5V
= 5V, V
= 5V
T
90 100
2494 F38
A
40
40
= 85°C
REF
V
CC
50
50
= 2.5V
= V
60
60
REF
T
A
70
70
= 5V
= 25°C
80
80
90 100
90 100
2494 F36
2494 F33
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