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WM8739LEDS Datasheet(PDF) 32 Page - Wolfson Microelectronics plc |
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WM8739LEDS Datasheet(HTML) 32 Page - Wolfson Microelectronics plc |
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32 / 35 page  WM8739 Advanced Information AI Rev 2.2 September 2001 32 RECOMMENDED EXTERNAL COMPONENTS Audio Serial Data I/F 3-wire Interface 2-wire Interface WM8739 ADC VMID AVDD AGND 14 15 3.3V 0.1 µF 10 µF + 16 ADCLRC ADCDAT DBVDD DCVDD 3.3V DGND 1.5V - 3.3V 7 6 5 BCLK 8 12 11 SDIN 1 CSB 19 SCLK 20 MODE 2 10 µF0.1µF XTO XTI/MCLK 15pF 15pF 4 3 10 µF RLINEIN 5K Ω 5K Ω 47pF + 470nF 17 LLINEIN 5K Ω 5K Ω 47pF + 470nF 18 0.1 µF 10µF 0.1 µF 3-wire or 2-wire MPU Interface 10k Ω 3.3V Notes: 1. AGND and DGND should be connected as close to the WM8739 as possible. 2. 0.1 µF capacitors should be positioned as close the the WM8739 as possible. 3. Capacitor types should be carefully chosen. Capacitors with very low ESR are recommended for optimum performance. Figure 29 External Components Diagram |
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