Digital filter characteristics, Cs5381 digital filter characteristics – Cirrus Logic CS5381 User Manual
Page 7
DS563F2
7
CS5381
DIGITAL FILTER CHARACTERISTICS
6.
The filter frequency response scales precisely with Fs.
7.
Response shown is for Fs equal to 48 kHz. Filter characteristics scale with Fs.
Parameter
Symbol
Min
Typ
Max
Unit
Single-Speed Mode (2 kHz to 54 kHz sample rates)
Passband
(-0.1 dB)
0
-
0.47
Fs
Passband Ripple
-0.1
-
0.035
dB
Stopband
0.58
-
-
Fs
Stopband Attenuation
-95
-
-
dB
Total Group Delay (Fs = Output Sample Rate)
t
gd
-
12/Fs
-
s
Double-Speed Mode (50 kHz to 108 kHz sample rates)
Passband
(-0.1 dB)
0
-
0.45
Fs
Passband Ripple
-0.1
-
0.035
dB
Stopband
0.68
-
-
Fs
Stopband Attenuation
-92
-
-
dB
Total Group Delay (Fs = Output Sample Rate)
t
gd
-
9/Fs
-
s
Quad-Speed Mode (100 kHz to 216 kHz sample rates)
Passband
(-0.1 dB)
0
-
0.24
Fs
Passband Ripple
-0.1
-
0.035
dB
Stopband
0.78
-
-
Fs
Stopband Attenuation
-97
-
-
dB
Total Group Delay (Fs = Output Sample Rate)
t
gd
-
5/Fs
-
s
High-Pass Filter Characteristics
Frequency Response
-3.0 dB
-0.13 dB
(Note 7)
-
1
20
-
-
Hz
Hz
Phase Deviation
@ 20 Hz
(Note 7)
-
10
-
Deg
Passband Ripple
-
-
0
dB
Filter Setting Time
10
5
/Fs
s