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DAC39J84IAAVR Datasheet(PDF) 41 Page - Texas Instruments |
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DAC39J84IAAVR Datasheet(HTML) 41 Page - Texas Instruments |
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41 / 146 page ![]() DAC39J84 www.ti.com SLASE48A – NOVEMBER 2014 – REVISED JANUARY 2015 Table 13. FIR Filter Coefficients NON-INTERPOLATING 2x INTERPOLATING HALF-BAND FILTERS INVERSE-SINC FILTER FIR0 FIR1 FIR2 FIR3 FIR4 59 Taps 23 Taps 11 Taps 11 Taps 9 Taps 6 6 –12 –12 29 29 3 3 1 1 0 0 0 0 0 0 0 0 –4 –4 –19 –19 84 84 –214 –214 –25 –25 13 13 0 0 0 0 0 0 0 0 –50 –50 47 47 –336 –336 1209 1209 150 150 592 (1) 0 0 0 0 2048 (1) 256 (1) –100 –100 1006 1006 0 0 0 0 192 192 –2691 –2691 0 0 0 0 –342 –342 10141 10141 0 0 16384 (1) 572 572 0 0 –914 –914 0 0 1409 1409 0 0 –2119 –2119 0 0 3152 3152 0 0 –4729 –4729 0 0 7420 7420 0 0 –13334 –13334 0 0 41527 41527 65536 (1) (1) Center taps are highlighted in BOLD. 7.3.11 Full Complex Mixer The DAC39J84 has two full complex mixer (FMIX) blocks with independent Numerically Controlled Oscillators (NCO) that enables flexible frequency placement without imposing additional limitations in the signal bandwidth. The NCOs have 48-bit frequency registers (phaseaddab (47:0) and phaseaddcd (47:0)) and 16-bit phase registers (phaseoffsetab (15:0) and phaseoffsetcd (15:0)) that generate the sine and cosine terms for the complex mixing. The NCO block diagram is shown in Figure 69. Copyright © 2014–2015, Texas Instruments Incorporated Submit Documentation Feedback 41 Product Folder Links: DAC39J84 |
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