CS4245_07 Datasheet, PDF (16/57 Pages) Cirrus Logic – 104 dB, 24-Bit, 192 kHz Stereo Audio CODEC

ADC DIGITAL FILTER CHARACTERISTICS
CS4245
Parameter (Notes 15, 17)
Single-Speed Mode
Passband
(-0.1 dB)
Passband Ripple
Stopband
Stopband Attenuation
Total Group Delay (Fs = Output Sample Rate)
Double-Speed Mode
Passband
(-0.1 dB)
Passband Ripple
Stopband
Stopband Attenuation
Total Group Delay (Fs = Output Sample Rate)
Quad-Speed Mode
Passband
(-0.1 dB)
Passband Ripple
Stopband
Stopband Attenuation
Total Group Delay (Fs = Output Sample Rate)
High-Pass Filter Characteristics
Frequency Response
-3.0 dB
-0.13 dB
Phase Deviation
@ 20 Hz
Passband Ripple
Filter Settling Time
Symbol Min Typ Max Unit
t_gd
t_gd
t_gd
(Note 16)
(Note 16)
0
- 0.4896 Fs
-
-
0.035 dB
0.5688 -
-
Fs
70
-
-
dB
- 12/Fs
-
s
0
- 0.4896 Fs
-
-
0.025 dB
0.5604 -
-
Fs
69
-
-
dB
-
9/Fs
-
s
0
- 0.2604 Fs
-
-
0.025 dB
0.5000 -
-
Fs
60
-
-
dB
-
5/Fs
-
s
-
1
-
Hz
20
-
Hz
-
10
-
Deg
-
-
0
dB
10⁵/Fs
s
15. Filter response is guaranteed by design.
16. Response shown is for Fs = 48 kHz.
17. Response is clock-dependent and will scale with Fs. Note that the response plots (Figures 33 to 44) are
normalized to Fs and can be de-normalized by multiplying the X-axis scale by Fs.
16
DS656F2