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AD9525/PCBZ 数据表(PDF) 8 Page - Analog Devices |
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AD9525/PCBZ 数据表(HTML) 8 Page - Analog Devices |
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8 / 48 page  AD9525 Data Sheet Rev. 0 | Page 8 of 48 CLOCK OUTPUT ABSOLUTE TIME JITTER (CLOCK GENERATION USING EXTERNAL 122.88 MHZ VCXO) Table 11. Parameter Min Typ Max Unit Test Conditions/Comments LVPECL OUTPUT ABSOLUTE TIME JITTER Application example based on a typical setup using an external 122.88 MHz VCXO (Crystek CVHD-950); reference = 122.88 MHz; R divider = 1; LBW = 40 Hz FOUT = 122.88 MHz 107 fs rms Integration BW = 1 kHz to 40 MHz 69 fs rms Integration BW = 12 kHz to 20 MHz FOUT = 61.44 MHz 108 fs rms Integration BW = 1 kHz to 20 MHz 107 fs rms Integration BW = 12 kHz to 20 MHz CLOCK OUTPUT ABSOLUTE TIME JITTER (CLOCK GENERATION USING EXTERNAL 1475 MHZ VCO) Table 12. Parameter Min Typ Max Unit Test Conditions/Comments LVPECL OUTPUT ABSOLUTE TIME JITTER Application example based on a typical setup using an external 1475 MHz VCO (Bowei Model MVCO-1475); reference = 122.88 MHz; R divider = 1; PLL LBW = 18 kHz FOUT = 1474.56 MHz 99 fs rms Integration BW = 1 kHz to 100 MHz 77 fs rms Integration BW = 10 kHz to 100 MHz 74 fs rms Integration BW = 10 kHz to 40 MHz 68 fs rms Integration BW = 12 kHz to 20 MHz Reference Sideband Spurs −93 dBc ±122.88 MHz FOUT = 245.76 MHz 104 fs rms Integration BW = 1 kHz to 100 MHz 87 fs rms Integration BW = 10 kHz to 100 MHz 75 fs rms Integration BW = 12 kHz to 20 MHz Reference Sideband Spurs −98 dBc ±122.88 MHz Table 13. Parameter Min Typ Max Unit Test Conditions/Comments LVPECL OUTPUT ABSOLUTE TIME JITTER Application example based on a typical setup using an external 1475 MHz VCO (Z-Communications CRO1474-LF); reference = 122.88 MHz; R divider = 1; PLL LBW = 8 kHz FOUT = 1474.56 MHz 72 fs rms Integration BW = 1 kHz to 100 MHz 40 fs rms Integration BW = 10 kHz to 100 MHz 33 fs rms Integration BW = 10 kHz to 40 MHz 28 fs rms Integration BW = 12 kHz to 20 MHz Reference Sideband Spurs −94 dBc ±122.88 MHz FOUT = 245.76 MHz 83 fs rms Integration BW = 1 kHz to 100 MHz 61 fs rms Integration BW = 10 kHz to 40 MHz 46 fs rms Integration BW = 12 kHz to 20 MHz Reference Sideband Spurs −93 dBc ±122.88 MHz |
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