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ADF4157BCPZ1 Fiches technique(PDF) 7 Page - Analog Devices |
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ADF4157BCPZ1 Fiches technique(HTML) 7 Page - Analog Devices |
7 / 20 page ADF4157 Rev. 0 | Page 7 of 20 TYPICAL PERFORMANCE CHARACTERISTICS PFD = 25 MHz, loop bandwidth = 20 kHz, reference = 100 MHz, ICP = 313 μA, phase noise measurements taken on the Agilent E5052A phase noise system. 10 –40 09 FREQUENCY (GHz) 5 0 –5 –10 –15 –20 –25 –30 –35 1234 5678 P = 4/5 P = 8/9 6.00 5.65 –100 900 TIME (µs) 5.95 5.90 5.85 5.80 5.75 5.70 0 100 200 300 400 500 600 700 800 CSR OFF CSR ON Figure 5. RF Input Sensitivity Figure 8. Lock Time for 200 MHz Jump from 5705 MHz to 5905 MHz with CSR On and Off 0 –40 0500 5.65 5.60 5.95 5.90 5.85 5.80 5.75 5.70 –100 900 TIME (µs) FREQUENCY (MHz) 100 200 300 400 VDD = 3V –5 –10 –15 –20 –25 –30 –35 CSR ON 0 100 200 300 400 500 600 700 800 CSR OFF .0 Figure 9. Lock Time for 200 MHz Jump from 5905 MHz to 5705 MHz with CSR On and Off Figure 6. Reference Input Sensitivity 0 –160 1k 10M FREQUENCY (Hz) –20 –40 –60 –80 –100 –120 –140 10k 100k 1M RF = 5800.25MHz, PFD = 25MHz, N = 232, FRAC = 335544, FREQUENCY RESOLUTION = 0.74Hz, 20kHz LOOP BW, ICP = 313µA, DSB INTEGRATED PHASE ERROR = 0.97° RMS, PHASE NOISE @ 2kHz = –87dBc/Hz. 6 –6 05 VCP (V) 4 2 0 –2 –4 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 Figure 10. Charge Pump Output Characteristics, Pump Up and Pump Down Figure 7. Phase Noise and Spurs (Note that the 250 kHz spur is an integer boundary spur; see the Spur Mechanisms section for more information.) |
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