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-
10
-
9
-
8
-
7
-
6
-
5
-
4
-
3
-
2
-
1
0
1
2
3
4
5
6
7
8
9
10
Offset Drift (
m
V/
°
C)
400
350
300
250
200
150
100
50
0
NumberofOccurrences
Multi-lot data based on
20 C intervals over the
°
range 40 C to +105
-
°
°
C.
-
15
-
14
-
13
-
12
-
11
-
10
-
9
-
8
-
7
-
6
-
5
-
4
-
3
-
2
-
1 0 1 2 3 4 5 6 7 8 9
10 11 12 13 14 15
Gain Drift (ppm/ C)
°
900
800
700
600
500
400
300
200
100
0
NumberofOccurrences
25 units based on
20 C intervals over the
°
range 40 C to +105
-
°
°
C.
Outliers: T < 20 C
°
-
0
50
100
150
200
250
300
350
Time (s)
40
30
20
10
0
-
10
-
20
-
30
-
40
NormalizedOffset(
V)
m
400
ADS1278 Low-Speed Mode
ADS1278 High-Speed and High-Resolution Modes
ADS1278 Low-Power Mode
ADS1274 High-Speed and High-Resolution Modes
0
50
100
150
200
250
300
350
Time (s)
40
30
20
10
0
-
10
-
20
-
30
-
40
NormalizedGainError(ppm)
400
ADS1274/78 High-Speed and High-Resolution Modes
ADS1278 Low-Speed Mode
ADS1278 Low-Power Mode
-
1000
-
900
-
800
-
700
-
600
-
500
-
400
-
300
-
200
-
100
0
100
200
300
400
500
600
700
800
900
1000
Offset ( V)
m
40
35
30
25
20
15
10
5
0
NumberofOccurrences
High-Speed Mode
25 Units
-
4000
-
3600
-
3200
-
2800
-
2400
-
2000
-
1600
-
1200
-
800
-
400
0
400
800
1200
1600
2000
2400
2800
3200
3600
4000
Gain Error (ppm)
90
80
70
60
50
40
30
20
10
0
NumberofOccurrences
High-Speed Mode
25 Units
SBAS367F
–
JUNE 2007
–
REVISED FEBRUARY 2011
TYPICAL CHARACTERISTICS (continued)
At T
A
= +25
°
C, High-Speed mode, AVDD = +5V, DVDD = +1.8V, IOVDD = +3.3V, f
CLK
= 27MHz, VREFP = 2.5V, and
VREFN = 0V, unless otherwise noted.
OFFSET DRIFT HISTOGRAM
GAIN DRIFT HISTOGRAM
Figure 25.
Figure 26.
OFFSET WARMUP DRIFT RESPONSE BAND
GAIN WARMUP DRIFT RESPONSE BAND
Figure 27.
Figure 28.
OFFSET ERROR HISTOGRAM
GAIN ERROR HISTOGRAM
Figure 29.
Figure 30.
14
©
2007
–
2011, Texas Instruments Incorporated
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