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AD9522-2/PCBZ датащи(PDF) 47 Page - Analog Devices |
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AD9522-2/PCBZ датащи(HTML) 47 Page - Analog Devices |
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47 / 84 page ![]() AD9522-2 Rev. 0 | Page 47 of 84 12 3 4 5 6 7 8 910 INPUT TO VCO DIVIDER INPUT TO CHANNEL DIVIDER OUTPUT OF CHANNEL DIVIDER SYNC PIN 1 11 12 13 14 14 TO 15 CYCLES AT CHANNEL DIVIDER INPUT + 1 CYCLE AT VCO DIVIDER INPUT CHANNEL DIVIDER OUTPUT STATIC CHANNEL DIVIDER OUTPUT CLOCKING CHANNEL DIVIDER OUTPUT CLOCKING Figure 52. SYNC Timing Pipeline Delay When the VCO Divider Is Used—CLK or VCO Is Input INPUT TO CLK INPUT TO CHANNEL DIVIDER OUTPUT OF CHANNEL DIVIDER SYNC PIN 14 TO 15 CYCLES AT CHANNEL DIVIDER INPUT + 1 CYCLE AT CLK INPUT 12 3 4 5 6 7 8 910 11 12 13 14 1 CHANNEL DIVIDER OUTPUT STATIC CHANNEL DIVIDER OUTPUT CLOCKING CHANNEL DIVIDER OUTPUT CLOCKING Figure 53. SYNC Timing Pipeline Delay When the VCO Divider Is Not Used—CLK Input Only LVDS Output Drivers The AD9522 output drivers can be configured as either an LVDS differential output or as a pair of CMOS single-ended outputs. The LVDS outputs allow for selectable output current from ~1.75 mA to ~7 mA. The LVDS output polarity can be set as noninverting or inverting, which allows for the adjustment of the relative polarity of outputs within an application without requiring a board layout change. Each LVDS output can be individually powered down to save power. OUT OUT 3.5mA 3.5mA Figure 54. LVDS Output Simplified Equivalent Circuit with 3.5 mA Typical Current Source |
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