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ADRF6612ACPZ-R7 数据表(PDF) 24 Page - Analog Devices |
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ADRF6612ACPZ-R7 数据表(HTML) 24 Page - Analog Devices |
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24 / 57 page ![]() ADRF6612 Data Sheet Rev. A | Page 24 of 57 1k 10k 100k 1M 10M 100M –160 –140 –120 –100 –80 –60 –40 OFFSET FREQUENCY (Hz) Figure 66. VCO_3 Open-Loop Phase Noise vs. Offset Frequency, fVCO_3 = 3.2 GHz, Divide by Two Selected, VCOVTUNE = 1.5 V –230 –225 –220 –215 –210 –205 –200 1430 1630 1830 2030 2230 2430 2630 2830 LO FREQUENCY (MHz) –40°C +25°C +85°C Figure 67. PLL Figure of Merit (FOM) vs. LO Frequency, Integer Mode –180 –160 –140 –120 –100 –80 –60 –40 –20 0 1430 1630 1830 2030 2230 2430 2630 2830 LO FREQUENCY (MHz) 10MHz OFFSET 500kHz OFFSET 100kHz OFFSET 1kHz OFFSET –40°C +25°C +85°C Figure 68. Open-Loop Phase Noise vs. LO Frequency, Divide by Two Selected –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 69. VCO_3 Closed-Loop Phase Noise for Various LO_DIV Dividers vs. Offset Frequency, fVCO_3 = 3.2 GHz –230 –225 –220 –215 –210 –205 –200 1430 1630 1830 2030 2230 2430 2630 2830 LO FREQUENCY (MHz) –40°C +25°C +85°C Figure 70. PLL Figure of Merit (FOM) vs. LO Frequency, Fractional Mode Offset = 45 kHz, Bleed = 125 µA –170 –160 –150 –140 –130 –120 –110 –100 –90 1430 1630 1830 2030 2230 2430 2630 2830 LO FREQUENCY (MHz) –40°C +25°C +85°C 50kHz OFFSET 200kHz OFFSET 1MHz OFFSET 40MHz OFFSET Figure 71. Open-Loop Phase Noise vs. LO Frequency, Divide by Two Selected |
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