ADS1274
ADS1278
www.ti.com
SBAS367–JUNE 2007
TYPICAL CHARACTERISTICS (continued)
At TA = +25°C, High-Speed mode, AVDD = +5V, DVDD = +1.8V, IOVDD = +3.3V, fCLK = 27MHz, VREFP = 2.5V, and
VREFN = 0V, unless otherwise noted.
ADS1274 AVDD CURRENT
vs TEMPERATURE
ADS1274 DVDD CURRENT
vs TEMPERATURE
70
60
50
40
30
20
10
0
25
20
15
10
5
High-Speed and
High-Speed Mode
High-Resolution Modes
High-Resolution Mode
Low-Power Mode
Low-Power Mode
Low-Speed Mode
Low-Speed Mode
0
-40 -20
0
20
40
60
80
100 120 125
-40 -20
0
20
40
60
80
100 120 125
Temperature (°C)
Temperature (°C)
Figure 49.
Figure 50.
ADS1274 IOVDD CURRENT
vs TEMPERATURE
ADS1274 POWER DISSIPATION
vs TEMPERATURE
0.25
0.20
0.15
0.10
0.05
0
400
350
300
250
200
150
100
50
High-Speed Mode
High-Resolution Mode
Low-Power Mode
High-Speed Mode
High-Resolution Mode
Low-Speed Mode
Low-Power Mode
Low-Speed Mode
0
-40 -20
0
20
40
60
80
100 120 125
-40 -20
0
20
40
60
80
100 120 125
Temperature (°C)
Temperature (°C)
Figure 51.
Figure 52.
ADS1278 AVDD CURRENT
vs TEMPERATURE
ADS1278 DVDD CURRENT
vs TEMPERATURE
140
120
100
80
30
25
20
15
10
5
High-Speed Mode
High-Speed and
High-Resolution Modes
High-Resolution Mode
Low-Power Mode
60
Low-Power Mode
Low-Speed Mode
40
20
Low-Speed Mode
0
0
-40 -20
0
20
40
60
80
100 120 125
-40 -20
0
20
40
60
80
100 120 125
Temperature (°C)
Temperature (°C)
Figure 53.
Figure 54.
18
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