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AD9481 датащи(PDF) 13 Page - Analog Devices

номер детали AD9481
подробное описание детали  8-Bit, 250 MSPS 3.3 V A/D Converter
PDF  28 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

AD9481 датащи(HTML) 13 Page - Analog Devices

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AD9481
Rev. 0 | Page 13 of 28
75
70
65
60
55
50
45
40
0
300
SFDR
SNR
SINAD
250
200
150
100
50
SAMPLE CLOCK (MHz)
Figure 10. SNR, SINAD, SFDR vs. Sample Clock Frequency,
AIN = 70 MHz @ −1 dB
80
70
60
50
40
30
20
10
0
–70
0
–10
–20
–30
–40
–50
–60
ANALOG INPUT DRIVE LEVEL (dBFS)
SFDR (dBFS)
SFDR (dBc)
60dB
REFERENCE LINE
Figure 11. SFDR vs. AIN Input Level; AIN = 70 MHz @ 250 MSPS
0
–90
–80
–70
–60
–50
–40
–30
–20
–10
040
80
20
60
100
120
(MHz)
F1, F2 = –7dBFS
2F2–F1 = –65.9dBc
2F1–F2 = –64.9dBc
Figure 12. Two-Tone Intermodulation Distortion
(69.3 MHz and 70.3 MHz; fS = 250 MSPS)
0
140
IAVDD
IDRVDD
120
100
80
60
40
20
0
100
200
50
150
250
300
SAMPLE CLOCK (MSPS)
Figure 13. IAVDD and IDRVDD vs. Clock Rate, CLOAD = 5 pF
AIN = 70 MHz @ −1 dBFS
40
50
49
48
47
46
45
44
43
42
41
20
40
60
30
50
70
80
CLOCK POSITIVE DUTY CYCLE (%)
DCS ON
DCS OFF
Figure 14. SNR, SINAD vs. Clock Pulse-Width High,
AIN = 70 MHz @ −1 dBFS, 250 MSPS, DCS On/Off
40.0
50.0
47.5
45.0
42.5
55
75
70
65
60
0.5
1.1
0.9
1.5
0.7
1.3
1.7
1.9
EXTERNAL VREF VOLTAGE (V)
SNR
SINAD
SFDR
Figure 15. SNR, SINAD, and SFDR vs. VREF in External Reference Mode, AIN =
70 MHz @ −1 dBFS, 250 MSPS



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