[AK4438]
■ Slow Roll-Off Filter (SD bit = “0”, SLOW bit = “1”)
fs=44.1kHz
Parameter
Symbol
Min.
Typ.
Max.
Unit
Digital Filter
0.05dB
3.0dB
(Note 12)
(Note 15)
(Note 14)
(Note 13)
PB
PB
PR
SB
SA
GD
0
8.1
kHz
kHz
dB
kHz
dB
Passband
(Note 15)
18.2
Passband Ripple
Stopband
Stopband Attenuation
Group Delay
-0.043
39.2
73
0.0032
-
6.3
-
1/fs
Digital Filter + SCF + SMF (Note 14)
Frequency Response : 0 20.0kHz
-5.06
0.1
dB
fs=96kHz
Parameter
Digital Filter
0.05dB
Symbol
Min.
Typ.
Max.
Unit
PB
PB
PR
SB
SA
GD
0
17.7
kHz
kHz
dB
kHz
dB
Passband
(Note 15)
3.0dB
(Note 12)
(Note 15)
(Note 14)
(Note 13)
39.5
Passband Ripple
Stopband
Stopband Attenuation
Group Delay
-0.043
85.3
73
0.043
-
6.3
-
1/fs
Digital Filter + SCF + SMF (Note 14)
Frequency Response : 0 20.0kHz
-5.23
0.1
dB
fs=192kHz
Parameter
Digital Filter
0.05dB
Symbol
Min.
Typ.
Max.
Unit
PB
PB
PR
SB
SA
GD
0
35.5
kHz
kHz
dB
kHz
dB
Passband
(Note 15)
3.0dB
(Note 12)
(Note 15)
(Note 14)
(Note 13)
79.0
Passband Ripple
Stopband
Stopband Attenuation
Group Delay
-0.043
171
73
0.043
-
6.3
-
1/fs
Digital Filter + SCF + SMF (Note 14)
Frequency Response : 0 20.0kHz
-5.90
0.1
dB
Note 15. The pass band and stop band frequencies scale with fs. For example, PB=0.185×fs,
SB=0.888×fs.
016001925-E-00
2016/03
- 10 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
