ADS1208
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SBAS348A–MARCH 2005–REVISED MARCH 2005
TYPICAL CHARACTERISTICS (continued)
At 25°C, AVDD = BVDD = +5V, VREF = internal +2.5V, Mode 3, MCLK input = 20MHz, differential input voltage = 200mVPP
common-mode voltage = 1.4V, and 16-bit Sinc3 filter with OSR = 256, unless otherwise noted.
,
ANALOG POWER SUPPLY CURRENT vs
TEMPERATURE
DIGITAL POWER SUPPLY CURRENT vs
TEMPERATURE
14
13
12
11
10
9
3.0
2.5
2.0
1.5
1.0
0.5
0
M0
M0
M3
M3
8
−
−
−
−
20
40
20
0
+20
+40
+60
+80
40
0
+20
+40
+60
+80
_
_
Temperature ( C)
Temperature ( C)
Figure 26.
Figure 27.
REFERENCE OUTPUT VOLTAGE vs
TEMPERATURE
REFERENCE OUTPUT VOLTAGE vs
POWER SUPPLY
2.5000
2.4998
2.4996
2.4994
2.4992
2.4990
2.4988
2.4986
2.4984
2.4982
2.4980
2.5000
2.4998
2.4996
2.4994
2.4992
2.4990
2.4988
2.4986
2.4984
2.4982
2.4980
−
−
20
40
0
+20
+40
+60
+80
3.0
3.5
4.0
4.5
5.0
5.5
6.0
_
Temperature ( C)
VDD (V)
Figure 28.
Figure 29.
REFERENCE OUTPUT VOLTAGE vs
LOAD CURRENT
CURRENT SOURCE REFERENCE VOLTAGE vs
LOAD VOLTAGE (I = 8mA)
499.2
499.1
499.0
498.9
498.8
498.7
498.6
498.5
498.4
498.3
498.2
2.525
2.520
2.515
2.510
2.505
2.500
2.495
2.490
2.485
2.480
2.475
VDD = 5.5V
VDD = 4.5V
VDD = 5.0V
4.5V
5.0V
5.5V
−
0
1
2
3
4
5
6
5
0
5
10
15
20
VOUT (V)
IOUT (mA)
Figure 30.
Figure 31.
13
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