LTC2411/LTC2411-1
28
APPLICATIO S I FOR ATIO
WU
UU
Figure 23. Resolution (NoiseRMS ≤ 1LSB)
vs Output Data Rate and Temperature
OUTPUT DATA RATE (READINGS/SEC)
16
RESOLUTION
(BITS)
18
20
22
17
19
21
20
40
60
80
2411 F23
100
10
030
50
70
90
TA = 85°C
VCC = 5V
VREF = 5V
VINCM = 2.5V
VIN = 0V
FO = EXT OSC
RES = LOG2(VREF/NOISERMS)
TA = 25°C
Figure 24. Resolution (INLRMS ≤ 1LSB)
vs Output Data Rate and Temperature
OUTPUT DATA RATE (READINGS/SEC)
10
RESOLUTION
(BITS)
14
18
22
12
16
20
40
60
80
2411 F24
100
10
030
50
70
90
TA = 85°C
VCC = 5V
VREF = 5V
VINCM = 2.5V
VIN = 0V
FO = EXT OSC
RES = LOG2(VREF/INLMAX)
TA = 25°C
OUTPUT DATA RATE (READINGS/SEC)
–50
+FS
ERROR
(ppm
OF
V
REF
)
50
150
250
0
100
200
20
40
60
80
2411 F21
100
10
030
50
70
90
TA = 85°C
VCC = 5V
VREF = 5V
IN+ = 3.75V
IN – = 1.25V
FO = EXT OSC
TA = 25°C
Figure 21. + FS Error vs Output Data Rate and Temperature
Figure 22. – FS Error vs Output Data Rate and Temperature
OUTPUT DATA RATE (READINGS/SEC)
0
–
FS
ERROR
(ppm
OF
V
REF
)
0
50
100
40
2411 F22
–50
–100
–150
10 20 30
50 60 70 80 90 100
TA = 85°C
VCC = 5V
VREF = 5V
IN+ = 1.25V
IN – = 3.75V
FO = EXT OSC
TA = 25°C
OUTPUT DATA RATE (READINGS/SEC)
0
–120
OFFSET
ERROR
(ppm
OF
V
REF
)
–80
–40
0
60 70 80 90
120
2411 F20
10 20 30 40 50
100
40
80
VCC = 5V
VREF = 5V
VINCM = 2.5V
VIN = 0V
FO = EXT OSC
TA = 85°C
TA = 25°C
Figure 20. Offset Error vs Output Data Rate and Temperature
Figure 25. Offset Error vs Output
Data Rate and Reference Voltage
OUTPUT DATA RATE (READINGS/SEC)
–120
OFFSET
ERROR
(ppm
OF
V
REF
)
–60
–20
40
–80
–100
–40
20
0
20
40
60
80
2411 F25
100
10
030
50
70
90
VCC = 5V
REF– = GND
VINCM = 2.5V
VIN = 0V
FO = EXT OSC
TA = 25°C
VREF = 2.5V
VREF = 5V