D/a digital filter characteristics – Cirrus Logic CS42526 User Manual
Page 10
10
DS585F2
CS42526
D/A DIGITAL FILTER CHARACTERISTICS
Notes:
9. Response is clock dependent and will scale with Fs. Note that the response plots (
to
been normalized to Fs and can be de-normalized by multiplying the X-axis scale by Fs.
10. 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.
11. De-emphasis is available only in Single-Speed Mode.
Parameter
Fast Roll-Off
Slow Roll-Off
Unit
Min Typ
Max
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
-
-
0.4535
0.4998
0
0
-
-
0.4166
0.4998
Fs
Fs
Frequency Response 10 Hz to 20 kHz
-0.01
-
+0.01
-0.01
-
+0.01
dB
StopBand
0.5465
-
-
0.5834
-
-
Fs
StopBand Attenuation
(Note 10)
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 11)
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
Passband
(Note 9)
to -0.01 dB corner
to -3 dB corner
0
0
-
-
0.4166
0.4998
0
0
-
-
0.2083
0.4998
Fs
Fs
Frequency Response 10 Hz to 20 kHz
-0.01
-
0.01
-0.01
-
0.01
dB
StopBand
0.5834
-
-
0.7917
-
-
Fs
StopBand Attenuation
(Note 10)
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
Passband
(Note 9)
to -0.01 dB corner
to -3 dB corner
0
0
-
-
0.1046
0.4897
0
0
-
-
0.1042
0.4813
Fs
Fs
Frequency Response 10 Hz to 20 kHz
-0.01
-
0.01
-0.01
-
0.01
dB
StopBand
0.6355
-
-
0.8683
-
-
Fs
StopBand Attenuation
(Note 10)
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