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PCM1608 датащи(PDF) 34 Page - Texas Instruments |
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PCM1608 датащи(HTML) 34 Page - Texas Instruments |
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34 / 46 page ![]() www.ti.com – PCM1608 A V + * R 2 R 1 VCOM OPA2134 + 2 3 1 C1 R3 R2 C2 R1 C3 10 µF + S0056-03 R4 + OPA337 − To Additional Low-Pass Filter Circuits VOUT VIN PCB LAYOUT GUIDELINES Digital Logic and Audio Processor Digital Power +VD DGND Digital Section Analog Section Return Path for Digital Signals Analog Power +VS AGND −VS +5VA Digital Ground Analog Ground Output Circuits PCM1608 AGND VCC VDD DGND REG B0031-04 PCM1608 SBAS164B – DECEMBER 2000 – REVISED JULY 2005 APPLICATION INFORMATION (continued) Figure 33. Single-Supply Filter Circuit A typical PCB floor plan for the PCM1608 is shown in Figure 34. A ground plane is recommended, with the analog and digital sections being isolated from one another using a split or cut in the circuit board. The PCM1608 should be oriented with the digital I/O pins facing the ground plane split/cut to allow for short, direct connections to the digital audio interface and control signals originating from the digital section of the board. Figure 34. Recommended PCB Layout 34 |
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