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AD9544/PCBZ 数据表(PDF) 25 Page - Analog Devices |
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AD9544/PCBZ 数据表(HTML) 25 Page - Analog Devices |
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25 / 62 page ![]() Data Sheet AD9544 Rev. 0 | Page 25 of 62 –30 –25 –20 –15 –10 –5 0 5 0.001 0.01 0.1 1 10 100 1k PHASE MARGIN:88.5° PEAKING: <0.1dB ATTENUATION: AT LOOP BW: 5.5dB 2× LOOP BW: 18dB/DECADE 100× LOOP BW: 41dB/DECADE 1000× LOOP BW: 60dB/DECADE OFFSET FREQUENCY (Hz) BW = 10mHz BW = 100mHz BW = 1Hz BW = 10Hz BW = 100Hz Figure 21. DPLL Closed-Loop Transfer Function Nominal Phase Margin Loop Filter Setting –30 –25 –20 –15 –10 –5 0 5 0.001 0.01 0.1 1 OFFSET FREQUENCY (Hz) 10 100 1000 PHASE MARGIN:70° PEAKING: 1.07dB ATTENUATION: AT LOOP BW: 2.5dB 2× LOOP BW: 21dB/ DECADE 100× LOOP BW: 60dB/ DECADE BW = 10mHz BW = 100mHz BW = 1Hz BW = 10Hz BW = 100Hz Figure 22. DPLL Closed-Loop Transfer Function High Phase Margin Loop Filter Setting |
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