Datasheet

0
20
40
60
80
100
120
140
160
-
-
-
-
-
-
-
-
Frequency(kHz)
0 50 100 150 200 250
Amplitude(dB)
VA=VBD=2.7V
V =2.500V
REF
0
20
40
60
80
100
120
140
160
-
-
-
-
-
-
-
-
Frequency(kHz)
0 50 100 150 200 250
Amplitude(dB)
VA=VBD=5.0V
V =4.096V
REF
0
20
40
60
80
100
120
140
160
-
-
-
-
-
-
-
-
Frequency(kHz)
0 50 100 150 200 250
Amplitude(dB)
VA=VBD=2.7V
V =2.500V
REF
0
20
40
60
80
100
120
140
160
-
-
-
-
-
-
-
-
Frequency(kHz)
0 50 100 150 200 250
Amplitude(dB)
VA=VBD=5.0V
V =4.096V
REF
Code
7FFD 7FFE 7FFF 8000 8001
53
1665
4791
40
1643
VA=VBD=2.7V
V =2.500V
REF
Code
7FFD 7FFE 7FFF 8000 8001
0
768
6336
0
1088
VA=VBD=5.0V
V =4.096V
REF
ADS8331
ADS8332
www.ti.com SBAS363C –DECEMBER 2009–REVISED MAY 2012
TYPICAL CHARACTERISTICS: AC Performance
At T
A
= +25°C, V
REF
(REF+ – REF–) = 4.096V when VA = VBD = 5V or V
REF
(REF+ – REF–) = 2.5V when VA = VBD = 2.7V,
f
SCLK
= 21MHz, f
SAMPLE
= 500kSPS, and f
IN
= 10kHz, unless otherwise noted.
OUTPUT CODE HISTOGRAM OUTPUT CODE HISTOGRAM
FOR A DC INPUT (8192 Conversions) FOR A DC INPUT (8192 Conversions)
Figure 20. Figure 21.
FREQUENCY SPECTRUM FREQUENCY SPECTRUM
(8192 Point FFT, f
IN
= 1.0376kHz, –0.2dB) (8192 Point FFT, f
IN
= 1.0376kHz, –0.2dB)
Figure 22. Figure 23.
FREQUENCY SPECTRUM FREQUENCY SPECTRUM
(8192 Point FFT, f
IN
= 10.0708kHz, –0.2dB) (8192 Point FFT, f
IN
= 10.0708kHz, –0.2dB)
Figure 24. Figure 25.
Copyright © 2009–2012, Texas Instruments Incorporated 15