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CS4270-DZZR 데이터시트(PDF) 11 Page - Cirrus Logic |
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CS4270-DZZR 데이터시트(HTML) 11 Page - Cirrus Logic |
11 / 48 page DS686A1 11 CS4270 DAC 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 5) 5. Amplitude vs. Frequency plots of this data are available in Section 11. “Appendix” on page 42. See Figures 19 through 42. 6. Response is clock dependent and will scale with Fs. 7. For Single-Speed Mode, the Measurement Bandwidth is 0.5465 Fs to 3 Fs. For Double-Speed Mode, the Measurement Bandwidth is 0.577 Fs to 1.4 Fs. For Quad-Speed Mode, the Measurement Bandwidth is 0.7 Fs to 1 Fs. 8. De-emphasis is available only in Single-Speed Mode. Parameter Symbol Min Typ Max Unit Single-Speed Mode Passband ( Note 6) to -0.05 dB corner to -3 dB corner 0 0 - - .4780 .4996 Fs Fs Frequency Response 10 Hz to 20 kHz -.01 - +.08 dB StopBand .5465 - - Fs StopBand Attenuation (Note 7) 50 - - dB Group Delay tgd - 10/Fs - s De-emphasis Error (Note 8) Fs = 32 kHz Fs = 44.1 kHz Fs = 48 kHz - - - - - - +1.5/+0 +.05/-.25 -.2/-.4 dB dB dB Double-Speed Mode Passband ( Note 6) to -0.1 dB corner to -3 dB corner 0 0 - - .4650 .4982 Fs Fs Frequency Response 10 Hz to 20 kHz -.05 - +.2 dB StopBand .5770 - - Fs StopBand Attenuation (Note 7) 55 - - dB Group Delay tgd - 5/Fs - s Quad-Speed Mode Passband ( Note 6) to -0.1 dB corner to -3 dB corner 0 0 - - 0.397 0.476 Fs Fs Frequency Response 10 Hz to 20 kHz 0 - +0.00004 dB StopBand 0.7 - - Fs StopBand Attenuation (Note 7) 51 - - dB Group Delay tgd - 2.5/Fs - s |
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