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AD9852AST датащи(PDF) 11 Page - Analog Devices |
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AD9852AST датащи(HTML) 11 Page - Analog Devices |
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11 / 42 page ![]() AD9852 –11– REV. 0 DAC CURRENT – mA 55 0 54 53 52 51 50 49 48 5 1015 2025 Figure 19. SFDR vs. DAC Current, 59.1 MHz AOUT, 300 MHz EXTCLK FREQUENCY – MHz 620 0 615 610 605 600 595 590 20 40 60 80 100 120 140 Figure 20. Supply Current vs. Output Frequency; Variation Is Minimal as a Percentage and Heavily Dependent on Tuning Word FREQUENCY – Hz –110 100 –115 –120 –125 –130 –135 –140 –145 –150 –155 1k 10k 100k 80MHz 5MHz a. Residual Phase Noise 300 MHz Direct Clocking FREQUENCY – Hz –110 100 –115 –120 –125 –130 –135 –140 –145 –150 –155 1k 10k 100k 80MHz 5MHz b. Residual Phase Noise, 300 MHz (10 × REFCLK Multiplier Enabled) Figure 18. Residual Phase Noise, EXTCLK = 300 MHz, REFCLK Multiplier Disabled/Enabled at 10 × RISE TIME 1.04ns 500ps/DIV 232mV/DIV 50 INPUT JITTER [10.6ps RMS] –33ps 0ps +33ps Figure 21. Typical Comparator Output Jitter, 40 MHz AOUT, 300 MHz EXTCLK/REFCLK Multiplier Disabled REF1 RISE 1.174ns C1 FALL 1.286ns CH1 500mV M 500ps CH1 980mV Figure 22. Comparator Rise/Fall Times |
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