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ADRF6612ACPZ-R7 数据表(PDF) 23 Page - Analog Devices |
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ADRF6612ACPZ-R7 数据表(HTML) 23 Page - Analog Devices |
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23 / 57 page ![]() Data Sheet ADRF6612 Rev. A | Page 23 of 57 SYNTHESIZER VS = high performance mode, TA = 25°C, measured on LO output, fLO = 1700 MHz, ZO = 50 Ω, fREF = 122.88 MHz, fPFD = 1.536 MHz, fREF power = 4 dBm, integer mode loop filter, unless otherwise noted. –180 –160 –140 –120 –100 –80 –60 –40 1k 10k 100k 1M 10M 100M OFFSET FREQUENCY (Hz) Figure 60. VCO_0 Open-Loop Phase Noise vs. Offset Frequency, fVCO_0 = 5.1 GHz, Divide by Two Selected, VCOVTUNE = 1.5 V 1k 10k 100k 1M 10M 100M –180 –160 –140 –120 –100 –80 –60 –40 OFFSET FREQUENCY (Hz) Figure 61. VCO_1 Open-Loop Phase Noise vs. Offset Frequency, fVCO_1 = 4.5 GHz, Divide by Two Selected, VCOVTUNE = 1.5 V 1k 10k 100k 1M 10M 100M –180 –160 –140 –120 –100 –80 –60 –40 OFFSET FREQUENCY (Hz) Figure 62. VCO_2 Open-Loop Phase Noise vs. Offset Frequency, fVCO_2 = 3.8 GHz, Divide by Two Selected, VCOVTUNE = 1.5 V –160 –150 –140 –130 –120 –110 –100 –90 –80 –70 –60 0.001 0.01 0.1 1 10 100 OFFSET FREQUENCY (MHz) LO_DIV = /2 LO_DIV = /4 LO_DIV = /8 Figure 63. VCO_0 Closed-Loop Phase Noise for Various LO_DIV Dividers vs. Offset Frequency, fVCO_0 = 5.1 GHz –160 –150 –140 –130 –120 –110 –100 –90 –80 –70 –60 0.001 0.01 0.1 1 10 100 OFFSET FREQUENCY (MHz) LO_DIV = /2 LO_DIV = /4 LO_DIV = /8 Figure 64. VCO_1 Closed-Loop Phase Noise for Various LO_DIV Dividers vs. Offset Frequency, fVCO_1 = 4.5 GHz –160 –150 –140 –130 –120 –110 –100 –90 –80 –70 –60 0.001 0.01 0.1 1 10 100 OFFSET FREQUENCY (MHz) LO_DIV = /2 LO_DIV = /4 LO_DIV = /8 Figure 65. VCO_2 Closed-Loop Phase Noise for Various LO_DIV Dividers vs. Offset Frequency, fVCO_2 = 3.8 GHz |
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