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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
SBAS363 – DECEMBER 2009
www.ti.com
TYPICAL CHARACTERISTICS: AC 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, fSAMPLE = 500kSPS, and fIN = 10kHz, unless otherwise noted.
SIGNAL-TO-NOISE + DISTORTION
vs TEMPERATURE
SIGNAL-TO-NOISE RATIO
vs INPUT FREQUENCY
93
95
92
VA = VBD = 5.0V
VREF = 4.096V
fIN = 1.03760kHz, -0.2dB
91
90
VA = VBD = 5.0V
VREF = 4.096V
90
89
88
87
-50
VA = VBD = 2.7V
VREF = 2.500V
-25
0
25
50
Temperature (°C)
Figure 26.
75
100
VA = VBD = 2.7V
VREF = 2.500V
85
80
1
10
fIN (kHz)
Figure 27.
100
250
TOTAL HARMONIC DISTORTION
vs INPUT FREQUENCY
-65
-70
-75
-80
VA = VBD = 5.0V
-85
VREF = 4.096V
-90
-95
-100
VA = VBD = 2.7V
VREF = 2.500V
-105
1
10
fIN (kHz)
Figure 28.
100
250
SPURIOUS-FREE DYNAMIC RANGE
vs INPUT FREQUENCY
105
VA = VBD = 2.7V
100
VREF = 2.500V
95
90
VA = VBD = 5.0V
85
VREF = 4.096V
80
75
70
65
1
10
fIN (kHz)
Figure 29.
100
250
SIGNAL-TO-NOISE + DISTORTION
vs INPUT FREQUENCY
95
VA = VBD = 5.0V
90
VREF = 4.096V
85
VA = VBD = 2.7V
80
VREF = 2.500V
75
70
65
1
10
fIN (kHz)
Figure 30.
100
250
16
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