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DAC39RFS10 Scheda tecnica(PDF) 55 Page - Texas Instruments |
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DAC39RFS10 Scheda tecnica(HTML) 55 Page - Texas Instruments |
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55 / 177 page  Table 7-9. Interpolation Filter Coefficients (continued) Filter Coefficients (Center Tap in Bold) fir_3x -38 -38 0 83 117 0 -214 -281 0 464 584 0 -900 -1102 0 1612 1929 0 -2713 -3190 0 4346 5040 0 -6699 -7684 0 10023 11408 0 -14701 -16661 0 21389 24260 0 -31417 -35960 0 48101 56540 0 -82781 -105224 0 215190 432780 524288 432780 215190 0 -105224 -82781 0 56540 48101 0 -35960 -31417 0 24260 21389 0 -16661 -14701 0 11408 10023 0 -7684 -6699 0 5040 4346 0 -3190 -2713 0 1929 1612 0 -1102 -900 0 584 464 0 -281 -214 0 117 83 0 -38 -38 ]*2-19 Table 7-10. Filters Used vs. DUC Interpolation Factor DUC Interpolation Factor (LDUC) Filters Used in DUC 1st Filter 2nd Filter 3rd Filter 4th Filter 5th Filter 6th Filter 7th Filter 8th Filter 2x fir1 3x fir_3x 4x fir1 fir2 6x fir_3x fir2 8x fir1 fir2 fir3 12x fir_3x fir2 fir3 16x fir1 fir2 fir3 fir4 24x fir_3x fir2 fir3 fir4 32x fir1 fir2 fir3 fir4 fir5 48x fir_3x fir2 fir3 fir4 fir5 64x fir1 fir2 fir3 fir4 fir5 fir5 96x fir_3x fir2 fir3 fir4 fir5 fir5 128x fir1 fir2 fir3 fir4 fir4 fir5 fir5 192x fir_3x fir2 fir3 fir4 fir4 fir5 fir5 256x fir1 fir2 fir3 fir4 fir4 fir4 fir5 fir5 Normalized Frequency (/FCLK) 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 Figure 7-14. 2x Interpolation Filter Response Normalized Frequency (/FCLK) 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 0.2 -0.001 -0.0008 -0.0006 -0.0004 -0.0002 0 0.0002 0.0004 0.0006 0.0008 0.001 Figure 7-15. 2x Interpolation Filter Passband Response www.ti.com DDS39RF12, DDS39RFS12 SBASB21 – SEPTEMBER 2024 Copyright © 2025 Texas Instruments Incorporated Submit Document Feedback 55 Product Folder Links: DDS39RF12 DDS39RFS12 |
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