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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADRF6806ACPZ-R7 датащи(PDF) 12 Page - Analog Devices |
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ADRF6806ACPZ-R7 датащи(HTML) 12 Page - Analog Devices |
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12 / 36 page  ADRF6806 Data Sheet Rev. B | Page 12 of 36 SYNTHESIZER/PLL VS1 = 5 V, VS2 = 3.3 V, see the Register Structure section for recommended settings used. External loop filter bandwidth of ~67 kHz, fREF = fPFD = 26 MHz, measured at BB output, fBB = 50 MHz, unless otherwise noted. –160 –150 –140 –130 –120 –110 –100 –90 –80 1k 10k 100k 1M 10M OFFSET FREQUENCY (Hz) 2.5kHz LOOP FILTER 67kHz LOOP FILTER T=‐ TA = +85°C TA = +25°C TA = –40°C Figure 21. Phase Noise vs. Offset Frequency, fLO = 140 MHz –110 –105 –100 –95 –90 –85 –80 –75 –70 LO FREQUENCY (MHz) 1× PFD FREQUENCY 3× PFD FREQUENCY 0.5× PFD FREQUENCY TA = +85°C TA = +25°C TA = –40°C Figure 22. PLL Reference Spurs vs. LO Frequency –110 –105 –100 –95 –90 –85 –80 –75 –70 LO FREQUENCY (MHz) 2× PFD FREQUENCY 4× PFD FREQUENCY TA = +85°C TA = +25°C TA = –40°C Figure 23. PLL Reference Spurs vs. LO Frequency 0 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 50 100 150 200 250 300 350 400 450 500 LO FREQUENCY (MHz) TA = +85°C TA = +25°C TA = –40°C Figure 24. Integrated Phase Noise vs. LO Frequency (Spurs Omitted) –160 –150 –140 –130 –120 –110 –100 –90 –80 –70 –60 40 90 140 190 240 290 340 390 440 490 LO FREQUENCY (MHz) 5MHz OFFSET 10kHz OFFSET 1kHz OFFSET 67kHz LOOP FILTER BANDWIDTH 2.5kHz LOOP FILTER BANDWIDTH TA = +85°C TA = +25°C TA = –40°C Figure 25. Phase Noise vs. LO Frequency (1 kHz, 10 kHz, and 5 MHz Offsets) TA = +85°C TA = +25°C TA = –40°C –160 –150 –140 –130 –120 –110 –100 –90 –80 40 90 140 190 240 290 340 390 440 490 LO FREQUENCY (MHz) 1MHz OFFSET 100kHz OFFSET 67kHz LOOP FILTER BANDWIDTH 2.5kHz LOOP FILTER BANDWIDTH Figure 26. Phase Noise vs. LO Frequency (100 kHz and 1 MHz Offsets) |
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