TYPICAL CHARACTERISTICS (Cont.)
TA = +25°C, VDD = +2.7V, VREF = External +2.5V, fSAMPLE = 50kHz, unless otherwise noted.
CHANGE IN GAIN vs TEMPERATURE
INTERNAL REFERENCE vs TEMPERATURE
1.5
1.0
2.51875
2.51250
2.50625
2.50000
2.49375
2.48750
2.48125
0.5
0.0
–0.5
–1.0
–1.5
–50
–50
10
–25
0
25
50
75
100
125
10k
–50
–25
0
25
50
75
100
Temperature (°C)
Temperature (°C)
POWER-DOWN SUPPLY CURRENT
vs TEMPERATURE
SUPPLY CURRENT vs TEMPERATURE
750
600
450
300
150
0
400
350
300
250
200
150
100
–150
–25
0
25
50
75
100
–50
–25
0
25
50
75
100
Temperature (°C)
Temperature (°C)
SUPPLY CURRENT vs I2C BUS RATE
INTERNAL V
REF
vs TURN-ON TIME
300
250
200
150
100
50
100
80
60
40
20
0
No Cap
(42µs)
12-Bit Settling
1µF Cap
(1240µs)
12-Bit Settling
0
100
1k
0
200
400
600
800
1000
1200
1400
I2C Bus Rate (KHz)
Turn-On Time (µs)
ADS7828
SBAS181C
8
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