AK4601VQ Datasheet, PDF (22/111 Pages) Asahi Kasei Microsystems – Audio HUB CODEC with Digital Mixer

[AK4601]
1-4 Short Delay Slow Roll-Off Filter (ADSD bit = “1”, ADSL bit = “1”)
fs=48kHz
Parameter
SHORT DELAY SLOW ROLL-OFF
Passband (Note 25)
0dB/-0.074dB
-3.0dB
Stopband
(Note 25)
Stopband Attenuation
Group Delay Distortion : 0Hz~20kHz
Group Delay
(Note 26)
ADC Digital Filter(HPF)
Frequency Response -3.0dB
Symbol
PB
SB
SA
GD
GD
FR
Min.
0
-
36.5
85
-
-
-
Typ.
-
19.2
-
-
-
6
1.0
Max.
Unit
12.5
kHz
-
kHz
-
kHz
-
dB
2.6
1/fs
-
1/fs
-
Hz
fs=96kHz
Parameter
SHORT DELAY SLOW ROLL-OFF
Passband (Note 25)
0dB/-0.074dB
-3.0dB
Stopband
(Note 25)
Stopband Attenuation
Group Delay Distortion : 0Hz~40kHz
Group Delay
(Note 26)
ADC Digital Filter(HPF)
Frequency Response -3.0dB
Symbol
PB
SB
SA
GD
GD
FR
Min.
0
-
73
85
-
-
-
Typ.
-
38.5
-
-
-
6
1.9
Max.
Unit
25
kHz
-
kHz
-
kHz
-
dB
2.6
1/fs
-
1/fs
-
Hz
fs=192kHz
Parameter
Symbol
Min.
Typ.
Max.
Unit
SHORT DELAY SLOW ROLL-OFF
Passband (Note 25)
0db/-0.1dB
-3.0dB
PB
0
-
31.1
kHz
-
63.2
-
kHz
Stopband
(Note 25)
SB
145.9
-
-
kHz
Stopband Attenuation
SA
85
-
-
dB
Group Delay Distortion : 0Hz~40kHz
GD
-
-
0.5
1/fs
Group Delay
(Note 26)
GD
-
7
-
1/fs
ADC Digital Filter(HPF)
Frequency Response -3.0dB
FR
-
3.88
-
Hz
Note 25. The passband and stopband frequencies are proportional to fs (sampling rate). High-pass
filter characteristics are not included. A reference value of each passband and stopband
frequency is the maximum value of frequency response.
Note 26. Delay time caused by the digital filter calculation. This time is measured from an impulse
signal input until impulse data are set into the output register. It includes group delay by HPF.
016000391-E-01
- 22 -
2016/12