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AD9520-2 Arkusz danych(PDF) 11 Page - Analog Devices |
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AD9520-2 Arkusz danych(HTML) 11 Page - Analog Devices |
11 / 84 page AD9520-2 Rev. 0 | Page 11 of 84 CLOCK OUTPUT ABSOLUTE PHASE NOISE (INTERNAL VCO USED) Table 7. Parameter Min Typ Max Unit Test Conditions/Comments LVPECL ABSOLUTE PHASE NOISE Internal VCO; direct-to-LVPECL output and for loop bandwidths < 1 kHz VCO = 2.335 GHz; Output = 2.335 GHz @ 1 kHz Offset −49 dBc/Hz @ 10 kHz Offset −80 dBc/Hz @ 100 kHz Offset −105 dBc/Hz @ 1 MHz Offset −125 dBc/Hz @ 10 MHz Offset −140 dBc/Hz @ 40 MHz Offset −146 dBc/Hz VCO = 2.175 GHz; Output = 2.175 GHz @ 1 kHz Offset −52 dBc/Hz @ 10 kHz Offset −83 dBc/Hz @ 100 kHz Offset −108 dBc/Hz @ 1 MHz Offset −128 dBc/Hz @ 10 MHz Offset −142 dBc/Hz @ 40 MHz Offset −147 dBc/Hz VCO = 2.05 GHz; Output = 2.05 GHz @ 1 kHz Offset −55 dBc/Hz @ 10 kHz Offset −84 dBc/Hz @ 100 kHz Offset −110 dBc/Hz @ 1 MHz Offset −130 dBc/Hz @ 10 MHz Offset −142 dBc/Hz @ 40 MHz Offset −147 dBc/Hz CLOCK OUTPUT ABSOLUTE TIME JITTER (CLOCK GENERATION USING INTERNAL VCO) Table 8. Parameter Min Typ Max Unit Test Conditions/Comments LVPECL OUTPUT ABSOLUTE TIME JITTER Application example based on a typical setup where the reference source is clean, so a wider PLL loop bandwidth is used; reference = 15.36 MHz; R DIV = 1 VCO = 2.212 GHz; LVPECL = 245.76 MHz; PLL LBW = 66 kHz 145 fs rms Integration BW = 200 kHz to 10 MHz 321 fs rms Integration BW = 12 kHz to 20 MHz VCO = 2.212 GHz; LVPECL = 122.88 MHz; PLL LBW = 66 kHz 155 fs rms Integration BW = 200 kHz to 10 MHz 324 fs rms Integration BW = 12 kHz to 20 MHz VCO = 2.212 GHz; LVPECL = 61.44 MHz; PLL LBW = 66 kHz 169 fs rms Integration BW = 200 kHz to 10 MHz 336 fs rms Integration BW = 12 kHz to 20 MHz CLOCK OUTPUT ABSOLUTE TIME JITTER (CLOCK CLEANUP USING INTERNAL VCO) Table 9. Parameter Min Typ Max Unit Test Conditions/Comments LVPECL OUTPUT ABSOLUTE TIME JITTER Application example based on a typical setup where the reference source is jittery, so a narrower PLL loop bandwidth is used; reference = 19.44 MHz; R DIV = 162 VCO = 2.177 GHz; LVPECL = 155.52 MHz; PLL LBW = 2.1 kHz 569 fs rms Integration BW = 12 kHz to 20 MHz VCO = 2.212 GHz; LVPECL = 122.88 MHz; PLL LBW = 2.2 kHz 599 fs rms Integration BW = 12 kHz to 20 MHz |
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Podobny opis - AD9520-2 |
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