參數(shù)資料
型號: AD9958
廠商: Analog Devices, Inc.
英文描述: 2-Channel 500 MSPS DDS with 10-Bit DACs
中文描述: 雙通道500 MSPS的DDS的10位DAC
文件頁數(shù): 13/40頁
文件大小: 1051K
代理商: AD9958
AD9958
Rev. 0 | Page 13 of 40
–170
–160
–150
–140
–130
–120
–110
–100
10
100
1k
10k
100k
1M
10M
FREQUENCY OFFSET (Hz)
P
0
75.1MHz
100.3MHz
40.1MHz
15.1MHz
Figure 18. Residual Phase Noise (SSB) with f
OUT
= 15.1 MHz, 40.1MHz,
75.1 MHz, 100.3 MHz, f
CLK
= 500 MHz with REF_CLK Multiplier Bypassed
–70
–170
10
10M
0
FREQUENCY OFFSET (Hz)
P
–80
–90
–100
–110
–120
–130
–140
–150
–160
100
1k
10k
100k
1M
100.3MHz
75.1MHz
15.1MHz
40.1MHz
Figure 19. Residual Phase Noise (SSB) with f
OUT
= 15.1 MHz, 40.1MHz,
75.1 MHz, 100.3 MHz, f
CLK
= 500 MHz with REF_CLK Multiplier = 5x
–70
–170
10
10M
0
FREQUENCY OFFSET (Hz)
P
–80
–90
–100
–110
–120
–130
–140
–150
–160
100
1k
10k
100k
1M
100.3MHz
75.1MHz
15.1MHz
40.1MHz
Figure 20. Residual Phase Noise(SSB) with f
OUT
= 15.1 MHz, 40.1MHz,
75.1 MHz,100.3 MHz, f
CLK
= 500 MHz with REF_CLK Multiplier = 20×
–60
–85
25.3
200.3
FREQUENCY OF COUPLING SPUR (MHz)
C
–65
–70
–75
–80
50.3
75.3
100.3
125.3
150.3
175.3
SEPARATED DAC POWER PLANES
SINGLE DAC POWER PLANE
0
Figure 21. Channel Isolation at 500 MSPS Operation. Conditions are Channel
of Interest Fixed at 110.3 MHz, the Other Channels Are Frequency Swept.
600
0
500
REFERENCE CLOCK FREQUENCY (MHz)
T
500
400
300
200
100
450
400
350
300
250
200
150
100
50
2 CHANNELS ON
1 CHANNEL ON
0
Figure 22. Reference Clock Frequency vs. Power Dissipation vs. Channel(s)
Power On/Off
–45
–75
1.1
F
OUT
(MHz)
S
–50
–55
–60
–65
–70
15.1
40.1
75.1
100.3
200.3
SFDR AVERAGED
0
Figure 23. Averaged Channel SFDR vs. f
OUT
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AD9958BCPZ 2-Channel 500 MSPS DDS with 10-Bit DACs
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