AD9231 查看數據表（PDF） - Analog Devices
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AD9231 Datasheet PDF : 37 Pages
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AD9231
Data Sheet
AD9231-20
AVDD = 1.8 V; DRVDD = 1.8 V, maximum sample rate, 2 V p-p differential input, 1.0 V internal reference; AIN = −1.0 dBFS, DCS
disabled, unless otherwise noted.
0
120
–15 20MSPS
9.7MHz @ –1dBFS
–30
SNR = 70.3dB (71.3dBFS)
SFDR = 94.1dBc
–45
–60
–75
100
SFDRFS
80
SNRFS
60
SFDR
–90
2
+
–105
46
–120
53
40
SNR
20
–135
0
0.95 1.90 2.85 3.80 4.75 5.70 6.65 7.60 8.55 9.50
FREQUENCY (MHz)
Figure 26. AD9231-20 Single-Tone FFT with fIN = 9.7 MHz
0
–70
–60
–50
–40
–30
–20
–10
0
INPUT AMPLITUDE (dBc)
Figure 28. AD9231-20 SNR/SFDR vs. Input Amplitude (AIN) with fIN = 9.7 MHz
0
–15 20MSPS
30.6MHz @ –1dBFS
–30
SNR = 70.2dB (71.2dBFS)
SFDR = 94.6dBc
–45
–60
–75
–90
–105
+
2
4
6
5
3
–120
–135
0
0.95 1.90 2.85 3.80 4.75 5.70 6.65 7.60 8.55 9.50
FREQUENCY (MHz)
Figure 27. AD9231-20 Single-Tone FFT with fIN = 30.6 MHz
Rev. B | Page 16 of 36
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