User Manual

10 DS568F1
CS4398
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 9.)
4. Slow Roll-off interpolation filter is only available in Control Port mode.
5. Filter response is guaranteed by design.
6. Response is clock-dependent and will scale with Fs.
7. 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.
8. De-emphasis is available only in Single-Speed Mode; Only 44.1 kHz De-emphasis is available in Stand-
Alone mode.
9. Amplitude vs. Frequency plots of this data are available in the “Appendix” on page 41.
Parameter
Fast Roll-Off
UnitMin Typ Max
Combined Digital and On-Chip Analog Filter Response - Single-Speed Mode - 48 kHz (Note 5)
Passband (Note 6) 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 7) 102 - - dB
Group Delay - 9.4/Fs - s
De-emphasis Error (Note 8) 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 (Note 5)
Passband (Note 6) 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 7) 80 - - dB
Group Delay - 4.6/Fs - s
Combined Digital and On-Chip Analog Filter Response - Quad-Speed Mode - 192 kHz (Note 5)
Passband (Note 6) 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 7) 90 - - dB
Group Delay - 4.7/Fs - s