Cirrus Logic CS4382 - Manual (Page 7)

DS514F2 7
CS4382
ANALOG FILTER RESPONSE
Notes:
10. Slow Roll-Off interpolation filter is only available in Control Port Mode.
11. Filter response is not tested but is guaranteed by design.
12. Response is clock dependent and will scale with Fs. Note that the response plots ( Figures 9 to 32 ) have
been normalized to Fs and can be de-normalized by multiplying the X-axis scale by Fs.
13. Single and Double-Speed Mode Measurement Bandwidth is from stopband to 3 Fs.
Quad-Speed Mode Measurement Bandwidth is from stopband to 1.34 Fs.
14. De-emphasis is available only in Single-Speed Mode; Only 44.1 kHz De-emphasis is available in Stand-
Alone Mode
Parameter
Fast Roll-Off Slow Roll-Off (Note 10)
Unit Min Typ Max Min Typ Max
Combined Digital and On-chip Analog Filter Response - Single-Speed Mode (Note 11)
Passband (Note 12) to -0.01 dB corner
to -3 dB corner
0
0 -
- .454
.499 0
0 -
- 0.417
0.499 Fs
Fs
Frequency Response 10 Hz to 20 kHz -0.01 - +0.01 -0.01 - +0.01 dB
StopBand .547 - - .583 - - Fs
StopBand Attenuation (Note 13) 90 - - 64 - - dB
Group Delay - 12/Fs - - 6.5/Fs - s
Passband Group Delay Deviation 0 - 20 kHz - - ±0.41/Fs - ±0.14/Fs s
De-emphasis Error (Note 14) Fs = 32 kHz
(Relative to 1 kHz) Fs = 44.1 kHz
Fs = 48 kHz
-
-
- -
-
- ±0.23
±0.14
±0.09 -
-
- -
-
- ±0.23
±0.14
±0.09 dB
dB
dB
Combined Digital and On-chip Analog Filter Response - Double-Speed Mode - 96 kHz (Note 11)
Passband (Note 12) to -0.01 dB corner
to -3 dB corner
0
0 -
- .430
.499 0
0 -
- .296
.499 Fs
Fs
Frequency Response 10 Hz to 20 kHz -0.01 - 0.01 -0.01 - 0.01 dB
StopBand .583 - - .792 - - Fs
StopBand Attenuation (Note 13) 80 - - 70 - - dB
Group Delay - 4.6/Fs - - 3.9/Fs - s
Passband Group Delay Deviation 0 - 20 kHz - - ±0.03/Fs - ±0.01/Fs s
Combined Digital and On-chip Analog Filter Response - Quad-Speed Mode - 192 kHz (Note 11)
Passband (Note 12) to -0.01 dB corner
to -3 dB corner
0
0 -
- .105
.490 0
0 -
- .104
.481 Fs
Fs
Frequency Response 10 Hz to 20 kHz -0.01 - 0.01 -0.01 - 0.01 dB
StopBand .635 - - .868 - - Fs
StopBand Attenuation (Note 13) 90 - - 75 - - dB
Group Delay - 4.7/Fs - - 4.2/Fs - s
Passband Group Delay Deviation 0 - 20 kHz - - ±0.01/Fs - ±0.01/Fs s
Combined Digital and On-chip Analog Filter Response - DSD Mode (Note 11)
Passband (Note 12) to -0.1 dB corner
to -3 dB corner
-
- -
- -
- 0
0 -
- 20
120
kHz
kHz
Frequency Response 10 Hz to 20 kHz - - - -.01 - 0.1 dB