LTC2485 LINER [Linear Technology], LTC2485 Datasheet - Page 27

• Manufacturer Part Number: LTC2485
• Description: 24-Bit ?? ADC with Easy Drive Input Current Cancellation and I2C Interface
• Manufacturer: LINER [Linear Technology]

APPLICATIO S I FOR ATIO
Figure 23. –FS Error vs Output Data Rate and Temperature
–1500
–2500
–3500
–1000
–2000
–3000
–500
24
22
18
14
10
20
16
12
22
20
14
10
18
16
12
Figure 27. Resolution (Noise
vs Output Data Rate and Reference Voltage
0
0
0
0
Figure 25. Resolution (INL
vs Output Data Rate and Temperature
V
V
CA0/F
T
RES = LOG 2 (V
V
V
CA0/F
V
V
CA0/F
RES = LOG 2 (V
V
IN(CM)
IN
A
CC
IN(CM)
CC
IN(CM)
CC
10
10
10
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
OUTPUT DATA RATE (READINGS/SEC)
OUTPUT DATA RATE (READINGS/SEC)
= 0V
= V
= V
= 5V, V
0
T
0
0
20 30
20 30
U
A
20 30
= EXT CLOCK
= EXT CLOCK
REF
REF
= EXT CLOCK
= V
= V
= V
= 85°C
REF(CM)
REF(CM)
REF(CM)
REF
= 5V
= 5V
T
REF
= 2.5V
REF
A
40
40
U
40
= 85°C
/NOISE
/INL
50
50
50
MAX
V
T
CC
60
60
A
60
RMS
= 25°C
)
T
= V
A
)
70
70
70
= 25°C
W
REF
80
80
80
RMS
MAX
= 5V
90 100
90 100
90 100
2485 F23
2485 F27
2485 F25
≤ 1LSB)
≤ 1LSB)
U
Figure 28. Resolution (INL
vs Output Data Rate and Reference Voltage
Figure 24. Resolution (Noise
vs Output Data Rate and Temperature
–10
20
15
10
–5
22
20
18
16
14
12
10
24
22
20
18
16
14
10
12
0
5
Figure 26. Offset Error vs Output
Data Rate and Reference Voltage
0
0
0
V
V
V
CA0/F
T
V
V
CA0/F
T
RES = LOG 2 (V
CC
V
V
V
CA0/F
RES = LOG 2 (V
IN(CM)
IN
A
IN(CM)
IN
A
10
10
IN(CM)
CC
IN
10
= 25°C
= 25°C
OUTPUT DATA RATE (READINGS/SEC)
OUTPUT DATA RATE (READINGS/SEC)
OUTPUT DATA RATE (READINGS/SEC)
= 0V
= 5V, V
= 0V
= 0V
= V
0
0
T
20 30
20 30
A
0
= EXT CLOCK
= EXT CLOCK
20 30
V
= V
= V
= EXT CLOCK
= 85°C
REF
CC
= V
REF
REF(CM)
REF(CM)
= 5V, V
REF(CM)
= 5V
= 2.5V
REF
40
40
REF
40
/INL
REF
V
/NOISE
50
50
CC
50
MAX
= 2.5V
= V
V
T
60
60
CC
A
60
)
RMS
REF
= 25°C
= V
MAX
70
70
70
= 5V
)
REF
RMS
80
80
≤ 1LSB)
80
= 5V
≤ 1LSB)
LTC2485
90 100
90 100
2485 F26
2485 F28
90 100
2485 F24
27
2485fa