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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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WM8351 데이터시트(PDF) 82 Page - Wolfson Microelectronics plc |
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WM8351 데이터시트(HTML) 82 Page - Wolfson Microelectronics plc |
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82 / 330 page  WM8351 Production Data w PD, April 2012, Rev 4.5 82 13.9 ANALOGUE OUTPUTS 13.9.1 OUT1L AND OUT1R The headphone outputs, OUT1L and OUT1R can drive a 16 or 32 headphone load, either through DC blocking capacitors, or DC coupled without any capacitor. Each output has an analogue volume control PGA with a gain range of -57dB to +6dB as shown in Figure 44. Common mode noise rejection is also possible on the OUT1L and OUT1R outputs, using HPCOM as the return path. The HPCOM feature must be enabled via the OUT1_FB register field and the HPCOM connection must be AC coupled to the headphone output. A 4.7uF coupling capacitor is required between the noisy ground connection the HPCOM pin. The control register fields for the OUT1L and OUT1R outputs are described in Table 40. The available output configurations are shown in Section 13.9.3. Figure 44 Headphone Outputs OUT1L and OUT1R |
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