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ADC3683 датащи(PDF) 31 Page - Texas Instruments |
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ADC3683 датащи(HTML) 31 Page - Texas Instruments |
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31 / 70 page ![]() 7.3.4.7 Output Formatting with Decimation When using decimation, the digital output data is formatted as shown in Figure 7-34 (complex decimation) and Figure 7-35 (real decimation). The output format is shown for 18-bit output resolution. FCLK Serial LVDS 1-Wire (18x Serialization) Serial LVDS 2-Wire (9x Serialization) DA1 DA0 DB1 DB0 ChA ChB Serial LVDS 1/2-Wire (36x Serialization) FCLK DA0 DB0 FCLK DA0 DCLK DCLK DCLK BI <17:0> AI <17:0> AQ <17:0> BQ <17:0> AI <17:0> BI <17:0> BQ <17:0> AQ <17:0> BI D13 BI D11 BI D9 BI D7 BI D5 BI D3 BI D1 BI D12 BI D10 BI D8 BI D6 BI D4 BI D2 BI D0 BQ D13 BQ D11 BQ D9 BQ D7 BQ D5 BQ D3 BQ D12 BQ D10 BQ D8 BQ D6 BQ D4 BQ D2 BQ D1 BQ D0 AI D13 AI D11 AI D9 AI D7 AI D5 AI D3 AI D1 AI D12 AI D10 AI D8 AI D6 AI D4 AI D2 AI D0 AQ D13 AQ D11 AQ D9 AQ D7 AQ D5 AQ D3 AQ D12 AQ D10 AQ D8 AQ D6 AQ D4 AQ D2 AQ D1 AQ D0 BI D17 BI D15 BI D16 BI D14 AI D17 AI D15 AI D16 AI D14 BQ D17 BQ D15 BQ D16 BQ D14 AQ D17 AQ D15 AQ D16 AQ D14 Figure 7-34. Output Data Format in Complex Decimation (18-bit Output Resolution) Table 7-4 shows the output interface data rate along with the corresponding DCLK/DCLKIN and FCLK frequencies based on output resolution (R), number of SLVDS lanes (L) and complex decimation setting (N). Table 7-4 shows an actual lane rate example for the 2-, 1- and 1/2-wire interface, 18-bit output resolution and complex decimation by 4. Table 7-4. Serial LVDS Lane Rate Examples with Complex Decimation and 18-bit Output Resolution DECIMATION SETTING ADC SAMPLING RATE OUTPUT RESOLUTION # of WIRES FCLK DCLKIN, DCLK DA/B0,1 N FS R L FS / N [DA/B0,1] / 2 FS x 2 x R / L / N 4 65MSPS 18 2 16.25MHz 146.25 MHz 292.5 MHz 1 292.5 MHz 585 MHz 55MSPS 1/2 13.75MHz 495 MHz 990 MHz www.ti.com ADC3683-SP SBASAB5 – MARCH 2024 Copyright © 2024 Texas Instruments Incorporated Submit Document Feedback 31 Product Folder Links: ADC3683-SP |
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