Datasheet

-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
7
8
9
10
OffsetDrift(mV/°C)
400
350
300
250
200
150
100
50
0
NumberofOccurrences
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
NumberofOccurrences
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
NormalizedOffset( 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
NormalizedGainError(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
NumberofOccurrences
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
NumberofOccurrences
High-SpeedMode
25Units
ADS1274
ADS1278
SBAS367F –JUNE 2007–REVISED FEBRUARY 2011 www.ti.com
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 Submit Documentation Feedback © 2007–2011, Texas Instruments Incorporated
Product Folder Link(s): ADS1274 ADS1278