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AD9914/PCBZ 数据表(PDF) 13 Page - Analog Devices |
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AD9914/PCBZ 数据表(HTML) 13 Page - Analog Devices |
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13 / 45 page ![]() Data Sheet AD9914 Rev. F | Page 13 of 45 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0 START 0Hz 175MHz/DIV STOP 1.75GHz Figure 10. Wideband SFDR at 1396.5 MHz, SYSCLK = 3.5 GHz (SYSCLK PLL Bypassed) 0 –80 0 0.05 0.10 0.15 0.40 0.35 0.30 0.25 0.20 fC/fS –70 –60 –50 –40 –30 –20 –10 Figure 11. Wideband SFDR vs. Normalized fOUT SYSCLK = 3.5 GHz 0 –80 0 0.05 0.10 0.15 0.40 0.35 0.30 0.25 0.20 fC/fS –70 –60 –50 –40 –30 –20 –10 SYSCLK = 2.7GHz SYSCLK = 2.8GHz SYSCLK = 2.9GHz SYSCLK = 3.0GHz SYSCLK = 3.1GHz SYSCLK = 3.2GHz SYSCLK = 3.3GHz SYSCLK = 3.4GHz SYSCLK = 3.5GHz SYSCLK = 1.5GHz SYSCLK = 1.6GHz SYSCLK = 1.7GHz SYSCLK = 1.8GHz SYSCLK = 1.9GHz SYSCLK = 2.0GHz SYSCLK = 2.1GHz SYSCLK = 2.2GHz SYSCLK = 2.3GHz SYSCLK = 2.4GHz SYSCLK = 2.5GHz SYSCLK = 2.6GHz Figure 12. Wideband SFDR vs. Normalized fOUT, SYSCLK = 2.5 GHz to 3.5 GHz CENTER 1396.5MHz –100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0 50kHz/DIV SPAN 500kHz Figure 13. Narrow-Band SFDR at 1396.5 MHz, SYSCLK = 3.5 GHz (SYSCLK PLL Bypassed) 10 100 1k 10k 100k 1M 10M 100M FREQUENCY OFFSET (Hz) –70 –90 –80 –100 –110 –120 –130 –140 –150 –160 –170 SMA SMA AND ADCLK925 Figure 14. Absolute Phase Noise of REF CLK Source Driving AD9914 Rohde & Schwarz SMA100 Signal Generator at 3.5 GHz Buffered by Series ADCLK925 10 100 1k 10k 100k 1M 10M 100M FREQUENCY OFFSET (Hz) –70 –90 –80 –100 –110 –120 –130 –140 –150 –160 –170 1396MHz 696MHz 427MHz 171MHz Figure 15. Absolute Phase Noise Curves of DDS Output at 3.5 GHz Operation |
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