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ADS8331 View Datasheet(PDF) - Texas Instruments

Part NameDescriptionManufacturer
ADS8331 2.7V~5.5V, 16 Bit 500KSPS Low Power Serial ADC / Low-Power, 16-Bit, 500kSPS, 4-/8-Channel Unipolar Input TI
Texas Instruments TI
ADS8331 Datasheet PDF : 39 Pages
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ADS8331
ADS8332
www.ti.com
SBAS363 – DECEMBER 2009
TYPICAL CHARACTERISTICS: DC Performance (continued)
At TA = +25°C, VREF (REF+ – REF–) = 4.096V when VA = VBD = 5V or VREF (REF+ – REF–) = 2.5V when VA = VBD = 2.7V,
fSCLK = 21MHz, and fSAMPLE = 500kSPS, unless otherwise noted.
ANALOG SUPPLY CURRENT
vs SAMPLING RATE IN AUTO-NAP MODE
DEEP POWER-DOWN CURRENT
vs TEMPERATURE
8
120
7
6
VA = VBD = 5.0V
VREF = 4.096V
5
100
VA = VBD = 5.0V
VREF = 4.096V
80
4
60
3
40
VA = VBD = 2.7V
2
VA = VBD = 2.7V
VREF = 2.500V
VREF = 2.500V
20
1
0
0 50 100 150 200 250 300 350 400 450
Sampling Rate (kHz)
Figure 11.
0
-50
-25
0
25
50
Temperature (°C)
Figure 12.
75
100
INTERNAL CLOCK FREQUENCY
vs ANALOG SUPPLY VOLTAGE
12.2
11.7
11.2
VREF = 2.500V
VREF = 4.096V
10.7
10.2
VA (V)
Figure 13.
4
3
2
1
0
-1
-2
-3
-4
-50
CHANGE IN GAIN
vs TEMPERATURE
VA = VBD = 2.7V
VREF = 2.500V
VA = VBD = 5.0V
VREF = 4.096V
-25
0
25
50
Temperature (°C)
Figure 14.
75
100
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
-50
CHANGE IN OFFSET
vs TEMPERATURE
VA = VBD = 2.7V
VREF = 2.500V
VA = VBD = 5.0V
VREF = 4.096V
-25
0
25
50
Temperature (°C)
Figure 15.
75
100
CHANGE IN ANALOG SUPPLY CURRENT
vs TEMPERATURE
1.0
0.8
0.6
0.4
0.2
0
-0.2
VA = VBD = 2.7V
VREF = 2.500V
-0.4
-0.6
-0.8
-1.0
-50
VA = VBD = 5.0V
VREF = 4.096V
-25
0
25
50
Temperature (°C)
75
100
Figure 16.
Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): ADS8331 ADS8332
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