ADS1259
SBAS424C –JUNE 2009–REVISED MARCH 2010
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TYPICAL CHARACTERISTICS (continued)
At TA = +25°C, AVDD = +2.5V, AVSS = –2.5V, DVDD = 3.3V, VREF = 2.5V, VREFN = AVSS, fCLK = 7.3728MHz, and
fDATA = 60SPS, unless otherwise noted.
POWER-SUPPLY AND COMMON-MODE REJECTION vs
FREQUENCY
POWER-SUPPLY CURRENT vs TEMPERATURE
4.0
140
120
100
80
CMR
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
DVDD
DVDD
CMR
AVDD, AVSS (Internal Reference On)
AVDD, AVSS
AVDD
AVSS
60
40
20
DVDD
-55 -35 -15
0
10
100
1k
10k
100k
1M
5
25
45
65
85
105 125
Power-Supply and Common-Mode Frequency (Hz)
Temperature (°C)
Figure 20.
Figure 21.
INTERNAL REFERENCE VOLTAGE vs TEMPERATURE
INTERNAL REFERENCE VOLTAGE vs TEMPERATURE
2.501
2.504
ADS1259B
ADS1259
2.500
2.499
2.498
2.497
2.496
2.502
2.500
2.498
2.496
2.494
-50
-25
0
25
50
75
100
125
-55 -35 -15
5
25
45
65
85
105 125
Temperature (°C)
Temperature (°C)
Figure 22.
Figure 23.
OUT-OF-RANGE THRESHOLD vs TEMPERATURE
OUT-OF-RANGE THRESHOLD DISTRIBUTION HISTOGRAM
2.0
18
Relative to ±105%
5 Units
1.6
1.2
16
14
12
10
8
30 Units
0.8
0.4
0
-0.4
-0.8
-1.2
-1.6
-2.0
6
4
2
0
-55 -35 -15
5
25
45
65
85
105 125
Temperature (°C)
Threshold Error (%)
Figure 24.
Figure 25.
10
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