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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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AD9546/PCBZ 데이터시트(PDF) 15 Page - Analog Devices |
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AD9546/PCBZ 데이터시트(HTML) 15 Page - Analog Devices |
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15 / 205 page  Data Sheet AD9546 Rev. 0 | Page 15 of 205 REFx TO AUXILIARY REFx INPUT TIMING SKEW The values shown in Table 9 indicate the internal timing skew between a clock signal applied to the REFA input (configured for CMOS 1.2 V) and the same clock signal applied to an auxiliary REFx via an Mx pin with both clock signals time aligned at the device pins. Skew data for the various VDDIOB voltages is also captured in Table 9 because VDDIOB is the power supply for the Mx pins. Note that REFA CMOS 1.2 V is always the base input for a target Mx and auxiliary REFx combination. Skew relative to a different input configuration for REFA or to another REFx input (with various input configurations) can be inferred using Table 8 in conjunction with Table 9. Skew data appears only for M0, M1, M2, and M3 because these are the only Mx pins recommended for use with the auxiliary REFx references. The data reveals that operating with VDDIOB = 3.3 V yields lower REFx to auxiliary REFx timing skew than operating with VDDIOB = 1.8 V or 2.5 V. Table 9. Parameter Min Typ Max Unit INTERNAL TIMING SKEW M0 VDDIOB = 1.8 V Auxiliary REF0 950 1465 2040 ps Auxiliary REF1 845 1355 1930 ps Auxiliary REF2 715 1240 1820 ps Auxiliary REF3 720 1250 1835 ps VDDIOB = 2.5 V Auxiliary REF0 495 870 1255 ps Auxiliary REF1 380 760 1150 ps Auxiliary REF2 250 640 1045 ps Auxiliary REF3 255 655 1075 ps VDDIOB = 3.3 V Auxiliary REF0 330 610 925 ps Auxiliary REF1 215 505 820 ps Auxiliary REF2 95 385 715 ps Auxiliary REF3 95 400 740 ps M1 VDDIOB = 1.8 V Auxiliary REF0 1000 1485 2050 ps Auxiliary REF1 865 1355 1925 ps Auxiliary REF2 800 1300 1885 ps Auxiliary REF3 700 1200 1785 ps VDDIOB = 2.5 V Auxiliary REF0 455 830 1265 ps Auxiliary REF1 325 700 1135 ps Auxiliary REF2 255 640 1085 ps Auxiliary REF3 150 540 990 ps VDDIOB = 3.3 V Auxiliary REF0 315 585 915 ps Auxiliary REF1 185 460 795 ps Auxiliary REF2 115 400 735 ps Auxiliary REF3 35 310 635 ps M2 VDDIOB = 1.8 V Auxiliary REF0 1020 1515 2075 ps Auxiliary REF1 870 1390 1970 ps Auxiliary REF2 825 1325 1890 ps Auxiliary REF3 725 1235 1815 ps |
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