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AD9520-1/PCBZ датащи(PDF) 25 Page - Analog Devices |
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AD9520-1/PCBZ датащи(HTML) 25 Page - Analog Devices |
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25 / 80 page ![]() Data Sheet AD9520-1 Rev. B | Page 25 of 80 –100 –160 –150 –140 –130 –120 –110 1k 100M 1M 10M 100k 10k NOTES 1. THE LOOP FILTER USED TO GENERATE THIS PLOT IS SHOWN IN FIGURE 41. FREQUENCY (Hz) Figure 30. Phase Noise (Absolute) Clock Generation; Internal VCO at 2.458 GHz; PFD = 15.36 MHz; LBW = 40 kHz; LVPECL Output = 122.88 MHz 1k 100M 1M 10M 100k 10k FREQUENCY (Hz) –120 –160 –150 –140 –130 Figure 31. Phase Noise (Absolute), External VCXO (Toyocom TCO-2112) at 245.76 MHz; PFD = 15.36 MHz; LBW = 250 Hz; LVPECL Output = 245.76 MHz –80 –90 –100 –110 –120 –130 –140 –150 –160 1k 100M 1M 10M 100k NOTES 1. THE LOOP FILTER USED TO GENERATE THIS PLOT IS SHOWN IN FIGURE 42. 10k FREQUENCY (Hz) INTEGRATED RMS JITTER (12kHz TO 20MHz): 582 fs Figure 32. Phase Noise (Absolute) Clock Cleanup; Internal VCO at 2.488 GHz; PFD = 120 kHz; LBW = 1.84 kHz; LVPECL Output = 155.52 MHz 1000 100 10 1 0.1 0.01 0.1 1 10 100 1000 JITTER FREQUENCY (kHz) OC-48 OBJECTIVE MASK AD9520 NOTE: 375UI MAX AT 10Hz OFFSET IS THE MAXIMUM JITTER THAT CAN BE GENERATED BY THE TEST EQUIPMENT. FAILURE POINT IS GREATER THAN 375UI. fOBJ Figure 33. Telcordia GR-253 Jitter Tolerance Plot |
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