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WM8753LEB/V датащи(PDF) 76 Page - Wolfson Microelectronics plc |
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WM8753LEB/V датащи(HTML) 76 Page - Wolfson Microelectronics plc |
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76 / 87 page ![]() Advanced Information WM8753L w AI Rev 3.1 June 2004 76 DIGITAL FILTER CHARACTERISTICS The ADC and DAC employ different digital filters. There are 4 types of digital filter, called Type 0, 1, 2 and 3. The performance of Types 0 and 1 is listed in the table below, the responses of all filters is shown in the proceeding pages. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ADC Filter Type 0 (USB Mode, 250fs operation) +/- 0.05dB 0 0.416fs Passband -6dB 0.5fs Passband Ripple +/- 0.05 dB Stopband 0.584fs Stopband Attenuation f > 0.584fs -60 dB Group Delay 17/fs ADC Filter Type 1 (USB mode, 272fs or Normal mode operation) +/- 0.05dB 0 0.4535fs Passband -6dB 0.5fs Passband Ripple +/- 0.05 dB Stopband 0.5465fs Stopband Attenuation f > 0.5465fs -60 dB Group Delay 25/fs ADC High Pass Filter -3dB 3.7 -0.5dB 10.4 High Pass Filter Corner Frequency -0.1dB 21.6 Hz DAC Filter Type 0 (USB mode, 250fs operation) +/- 0.03dB 0 0.416fs Passband -6dB 0.5fs Passband Ripple +/-0.03 dB Stopband 0.584fs Stopband Attenuation f > 0.584fs -50 dB Group Delay 15/fs DAC Filter Type 1 (USB mode, 272fs or Normal mode operation) +/- 0.03dB 0 0.4535fs Passband -6dB 0.5fs Passband Ripple +/- 0.03 dB Stopband 0.5465fs Stopband Attenuation f > 0.5465fs -50 dB Group Delay 18/fs Table 74 HiFi Digital Filter Characteristics |
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