[AK4432]
■ Short Delay Slow Roll-Off Filter (DASD bit = “1”, DASL bit = “1”)
fs=48kHz
Parameter
Passband
(Note 8)
Passband Ripple
Stopband
Symbol
PB
Min.
0
-
-0.07
43.0
74.9
-
Typ.
-
20.24
Max.
10.1
-
Unit
kHz
kHz
dB
kHz
dB
-0.07dB~+0.05dB
-3.0dB
PB
PR
SB
SA
+0.05
(Note 8)
Stopband Attenuation
Group Delay
(Note 9)
GD
5.2
-
1/fs
Digital Filter + SCF + SMF
FR
-3.50
-2.50
dB
Frequency Response: 0Hz 20kHz
fs=96kHz
Parameter
Passband
(Note 8)
Passband Ripple
Stopband
Symbol
PB
Min.
0
-
-0.07
86.0
74.9
-
Typ.
-
40.50
Max.
20.3
-
Unit
kHz
kHz
dB
kHz
dB
-0.07dB~+0.05dB
-3.0dB
PB
PR
SB
SA
+0.05
(Note 8)
Stopband Attenuation
Group Delay
(Note 9)
GD
5.2
-
1/fs
Digital Filter + SCF + SMF
FR
-4.00
-2.50
dB
Frequency Response: 0Hz 40kHz
fs=192kH
Parameter
Passband
(Note 8)
Passband Ripple
Stopband
Symbol
PB
Min.
0
-
-0.07
172.0
74.9
-
Typ.
-
81.00
Max.
40.6
-
Unit
kHz
kHz
dB
kHz
dB
-0.07dB~+0.05dB
-3.0dB
PB
PR
SB
SA
+0.05
(Note 8)
Stopband Attenuation
Group Delay
(Note 9)
GD
5.2
-
1/fs
Digital Filter + SCF + SMF
FR
-4.75
-2.75
dB
Frequency Response: 0Hz 80kHz
Note 8. The passband and stopband frequencies are proportional to “fs” (system sampling rate). Each
frequency response refers to that of 1kHz.
Note 9. The calculated delay time caused by digital filtering. The digital filter’s delay is calculated as the
time from setting 16/24/32bit impulse data into the input register until an analog peak signal is
output.
015002029-E-00
2015/02
- 12 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
