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WM8960 数据表(PDF) 83 Page - Wolfson Microelectronics plc |
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WM8960 数据表(HTML) 83 Page - Wolfson Microelectronics plc |
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83 / 92 page ![]() Production Data WM8960 w PD, August 2013, Rev 4.2 83 ADC FILTER RESPONSES -150 -130 -110 -90 -70 -50 -30 -10 10 Frequency (fs) Magnitude (dB): Passband Ripple -0.1 -0.08 -0.06 -0.04 -0.02 0 0.02 0.04 0.06 0.08 0.1 0.00 0.25 Frequency Figure 38 ADC Digital Filter Frequency Response Figure 39 ADC Digital Filter Ripple DAC FILTER RESPONSES DAC STOPBAND ATTENUATION The DAC digital filter type is selected by the DACSLOPE register bit as shown in Table 50. REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R6 (06h) ADC and DAC Control (2) 1 DACSLOPE 0 Selects DAC filter characteristics 0 = Normal mode 1 = Sloping stopband mode Table 50 DAC Filter Selection MAGNITUDE(dB) -150 -130 -110 -90 -70 -50 -30 -10 10 0 0.5 1 1.5 2 2.5 3 Frequency (fs) MAGNITUDE(dB) -0.005 0 0.005 0.01 0.015 0.02 0.025 0.03 0.035 0.04 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 Frequency (fs) Figure 40 DAC Digital Filter Frequency Response (Normal Mode) Figure 41 DAC Digital Filter Ripple (Normal Mode) |
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