A/d digital filter characteristics – Cirrus Logic CS42528 User Manual
Page 8
8
DS586F2
CS42528
A/D DIGITAL FILTER CHARACTERISTICS
Notes:
5. The filter frequency response scales precisely with Fs.
6. Response shown is for Fs equal to 48 kHz. Filter characteristics scale with Fs.
Parameter
Symbol
Min
Typ
Max
Unit
Single-Speed Mode (2 to 50 kHz sample rates)
Passband
(-0.1 dB)
(Note 5)
0
-
0.47
Fs
Passband Ripple
-
-
0.035
dB
Stopband
(Note 5)
0.58
-
-
Fs
Stopband Attenuation
-95
-
-
dB
Total Group Delay (Fs = Output Sample Rate)
t
gd
-
12/Fs
-
s
Group Delay Variation vs. Frequency
t
gd
-
-
0.0
s
Double-Speed Mode (50 to 100 kHz sample rates)
Passband
(-0.1 dB)
(Note 5)
0
-
0.45
Fs
Passband Ripple
-
-
0.035
dB
Stopband
(Note 5)
0.68
-
-
Fs
Stopband Attenuation
-92
-
-
dB
Total Group Delay (Fs = Output Sample Rate)
t
gd
-
9/Fs
-
s
Group Delay Variation vs. Frequency
t
gd
-
-
0.0
s
Quad-Speed Mode (100 to 192 kHz sample rates)
Passband
(-0.1 dB)
(Note 5)
0
-
0.24
Fs
Passband Ripple
-
-
0.035
dB
Stopband
(Note 5)
0.78
-
-
Fs
Stopband Attenuation
-97
-
-
dB
Total Group Delay (Fs = Output Sample Rate)
t
gd
-
5/Fs
-
s
Group Delay Variation vs. Frequency
t
gd
-
-
0.0
s
High-Pass Filter Characteristics
Frequency Response
-3.0 dB
-0.13 dB
(Note 6)
-
1
20
-
-
Hz
Hz
Phase Deviation
@ 20 Hz
(Note 6)
-
10
-
Deg
Passband Ripple
-
-
0
dB
Filter Setting Time
-
10
5
/Fs
-
s