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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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AK5558VN Datenblatt(PDF) 53 Page - Asahi Kasei Microsystems |
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AK5558VN Datenblatt(HTML) 53 Page - Asahi Kasei Microsystems |
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53 / 70 page  [AK5558] 015099850-E-00 2016/03 - 53 - ■ Digital Filter Setting (PCM Mode) The AK5558 has four types of digital filters and they can be selected by SD pin (bit) and SLOW pin (bit). The filter setting is not available in OCT speed mode, HEX speed mode and DSD mode. So the setting of the digital filter is ignored. SD pin (bit) SLOW pin (bit) Filter L (0) L (0) Sharp Roll-off Filter L (0) H (1) Slow Roll-off Filter H (1) L (0) Short Delay Sharp Roll-off Filter H (1) H (1) Short Delay Slow Roll-off Filter Table 20. Digital Filter Setting ■ Digital HPF (PCM Mode) The AK5558 has a digital high-pass filter for DC offset (include internal offset) cancelation. The digital high-pass filter is enabled by setting the HPFE pin (bit) = “H (1)”. The cut-off frequency of the high-pass filter is fixed 1.0 Hz when fs= 48 kHz (Normal Speed mode), 96 kHz (Double Speed mode) or 192 kHz (Quad Speed mode). The high-pass filter is not available in OCT speed mode, HEX speed mode and DSD mode. So that the setting of the HPFE pin is ignored. The high pass-filter setting should be changed when all channels are reset condition. ■ Overflow Detection (PCM Mode, DSD Mode) [1] PCM Mode The AK5558 has an overflow detect function for the analog input. The OVF pin outputs “H” if one of AIN1 - 8 channels overflows (more than 0.3 dBFS). The OVF pin returns to “L” when analog input overflows are resolved. The OVF output for overflowed analog input has the same group delay as the ADC. [2] DSD Mode Overflow Detection (Error Detection Function) The OVF pin outputs “H” if any channel’s DSD modulators overflows. The OVF pin returns to “L” when overflows are resolved. |
Ähnliche Teilenummer - AK5558VN_16 |
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Ähnliche Beschreibung - AK5558VN_16 |
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