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ADF4154BRU Datasheet(PDF) 7 Page - Analog Devices |
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ADF4154BRU Datasheet(HTML) 7 Page - Analog Devices |
7 / 24 page Data Sheet ADF4154 Rev. C | Page 7 of 24 TYPICAL PERFORMANCE CHARACTERISTICS Loop bandwidth = 20 kHz; reference = 250 MHz; VCO = Vari-L Company, Inc., VCO190-1750T; evaluation board = EVAL-ADF4154EB1; measurements taken with the Agilent E5500 phase noise measurement system. –30 –60 –80 –140 –130 –120 –110 –150 –160 –170 –90 –100 –70 –50 –40 20kHz LOOP BW, LOW NOISE MODE RF = 1.7202MHz, PFD = 25MHz, N = 68, FRAC = 101, MOD = 125, ICP = 625µA, DSB INTEGRATED PHASE ERROR = 0.23° rms SIRENZA 1750T VCO 1k 10k 1M 10M 100M 100k FREQUENCY (Hz) Figure 5. Single-Sideband Phase Noise Plot (Lowest Noise Mode) –30 –60 –80 –140 –130 –120 –110 –150 –160 –170 –90 –100 –70 –50 –40 1k 10k 1M 10M 100M 100k FREQUENCY (Hz) 20kHz LOOP BW, LOW NOISE AND SPUR MODE RF = 1.7202MHz, PFD = 25MHz, N = 68, FRAC = 101, MOD = 125, ICP = 625µA, DSB INTEGRATED PHASE ERROR = 0.33° rms SIRENZA 1750T VCO Figure 6. Single-Sideband Phase Noise Plot (Low Noise Mode and Spur Mode) –30 –60 –80 –140 –130 –120 –110 –150 –160 –170 –90 –100 –70 –50 –40 1k 10k 1M 10M 100M 100k FREQUENCY (Hz) 20kHz LOOP BW, LOW SPUR MODE RF = 1.7202MHz, PFD = 25MHz, N = 68, FRAC = 101, MOD = 125, ICP = 625µA, DSB INTEGRATED PHASE ERROR = 0.36° rms SIRENZA 1750T VCO Figure 7. Single-Sideband Phase Noise Plot (Lowest Spur Mode) PHASE DETECTOR FREQUENCY (kHz) –130 –140 –150 –160 –170 100 1000 10000 100000 Figure 8. PFD Noise Floor vs. PFD Frequency (Lowest Noise Mode) FREQUENCY (GHz) 5 0 –5 –10 –20 –15 –25 –30 –35 0 0.5 1.0 1.5 4.0 3.5 3.0 2.5 2.0 4.5 P = 4/5 P = 8/9 Figure 9. RF Input Sensitivity VCP (V) 6 0 –6 4 2 –2 –4 –5 –3 –1 1 3 5 0 1 2 3 4 5 Figure 10. Charge Pump Output Characteristics |
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