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CS4365-CQZR Datasheet(PDF) 11 Page - Cirrus Logic |
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CS4365-CQZR Datasheet(HTML) 11 Page - Cirrus Logic |
11 / 51 page DS670PP1 11 CS4365 COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE The filter characteristics have been normalized to the sample rate (Fs) and can be referenced to the desired sam- ple rate by multiplying the given characteristic by Fs. (See note 12.) Notes: 8. Slow Roll-off interpolation filter is only available in software mode. 9. Response is clock dependent and will scale with Fs. 10. For Single-Speed Mode, the Measurement Bandwidth is from stopband to 3 Fs. For Double-Speed Mode, the Measurement Bandwidth is from stopband to 3 Fs. For Quad-Speed Mode, the Measurement Bandwidth is from stopband to 1.34 Fs. 11. De-emphasis is available only in Single-Speed Mode; Only 44.1 kHz De-emphasis is available in hard- ware mode. 12. Amplitude vs. Frequency plots of this data are available starting on page 47. Parameter Fast Roll-Off Unit Min Typ Max Combined Digital and On-chip Analog Filter Response - Single-Speed Mode - 48 kHz Passband (Note 9) to -0.01 dB corner to -3 dB corner 0 0 - - .454 .499 Fs Fs Frequency Response 10 Hz to 20 kHz -0.01 - +0.01 dB StopBand 0.547 - - Fs StopBand Attenuation (Note 10) 102 - - dB Group Delay - 10.4/Fs - s De-emphasis Error (Note 11) Fs = 32 kHz (Relative to 1 kHz) Fs = 44.1 kHz Fs = 48 kHz - - - - - - ±0.23 ±0.14 ±0.09 dB dB dB Combined Digital and On-chip Analog Filter Response - Double-Speed Mode - 96 kHz Passband (Note 9) to -0.01 dB corner to -3 dB corner 0 0 - - .430 .499 Fs Fs Frequency Response 10 Hz to 20 kHz -0.01 - +0.01 dB StopBand .583 - - Fs StopBand Attenuation (Note 10) 80 - - dB Group Delay - 6.15/Fs - s Combined Digital and On-chip Analog Filter Response - Quad-Speed Mode - 192 kHz Passband (Note 9) to -0.01 dB corner to -3 dB corner 0 0 - - .105 .490 Fs Fs Frequency Response 10 Hz to 20 kHz -0.01 - +0.01 dB StopBand .635 - - Fs StopBand Attenuation (Note 10) 90 - - dB Group Delay - 7.1/Fs - s |
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