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ADMV4530 Datasheet(PDF) 23 Page - Analog Devices |
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ADMV4530 Datasheet(HTML) 23 Page - Analog Devices |
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23 / 59 page ![]() Data Sheet ADMV4530 Rev. A | Page 23 of 59 –150 –145 –140 –135 –130 –125 –120 –115 –110 –105 –100 –95 –90 –85 –80 –75 –70 –65 –60 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 VTUNE (V) OFFSET = 10kHz OFFSET = 100kHz OFFSET = 1MHz Figure 77. VCO Phase Noise vs. VTUNE for Various Offsets, Open Loop, TA = 25°C –150 –145 –140 –135 –130 –125 –120 –115 –110 –105 –100 –95 –90 –85 –80 –75 –70 –60 –65 1k 10k 100k 1M 10M OFFSET FREQUENCY (Hz) TA = +85°C TA = +25°C TA = –40°C Figure 78. Phase Noise vs. Offset Frequency over Temperature, R_WORD = 2, CP_CURRENT = 4.2 mA, LO Frequency = 30 GHz –60 –58 –56 –54 –52 –50 –48 –46 –44 –42 –40 –38 –36 –34 –32 –30 28.0 28.2 28.4 28.6 28.8 29.0 29.2 29.4 29.6 29.8 30.0 LO FREQUENCY (GHz) TA = +85°C TA = +25°C TA = –40°C SYMBOL RATE = 16MHz SYMBOL RATE = 256kHz SYMBOL RATE = 128kHz Figure 79. Integrated Phase Noise vs. LO Frequency over Temperature, R_WORD = 2, CP_CURRENT = 4.2 mA, Integrated from 1% to 50% of the Symbol Rate –150 –145 –140 –135 –130 –125 –120 –115 –110 –105 –100 –95 –90 –85 –80 –75 –70 –65 –60 1k 10k 100k 1M 10M OFFSET FREQUENCY (Hz) CP_CURRENT = 1.4mA, R_WORD = 1 CP_CURRENT = 2.8mA, R_WORD = 2 CP_CURRENT = 5.6mA, R_WORD = 4 Figure 80. Phase Noise vs. Offset Frequency, LO Frequency = 27.2 GHz for Various CP_CURRENT and R_WORD Settings –150 –145 –140 –135 –130 –125 –120 –115 –110 –105 –100 –95 –90 –85 –80 –75 –70 –65 –60 1k 10k 100k 1M 10M OFFSET FREQUENCY (Hz) LO FREQUENCY = 28GHz LO FREQUENCY = 30GHz Figure 81. Phase Noise vs. Offset Frequency, R_WORD = 2, CP_CURRENT = 4.2 mA, LO Frequency = 28 GHz and 30 GHz –150 –145 –140 –135 –130 –125 –120 –115 –110 –105 –100 –95 –90 –85 –80 –75 –70 –65 –60 1k 10k 100k 1M 10M OFFSET FREQUENCY (Hz) TA = +85°C TA = +25°C TA = –40°C Figure 82. Phase Noise vs. Offset Frequency over Temperature, LO Frequency = 26.8 GHz, R_WORD = 4, CP_CURRENT = 2.1 mA |
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