ASAHI KASEI
[AK4704]
AKM CONFIDENTIAL
FILTER CHARACTERISTICS
(Ta = 25°C; VP=11.4∼12.6V, VD = 4.75∼5.25V, VVD1=VVD2 = 4.75∼5.25V; fs = 48kHz; DEM0 = “1”, DEM1 = “0”)
Parameter
Digital filter
Passband
Symbol
min
typ
max
Units
PB
0
-
21.77
-
kHz
kHz
kHz
dB
dB
1/fs
±0.05dB
-6.0dB
(Note: 14)
(Note: 14)
24.0
Stopband
Passband Ripple
Stopband Attenuation
Group Delay
SB
PR
SA
GD
26.23
± 0.01
64
-
(Note: 15)
24
-
Digital Filter + LPF
FR
-
-
dB
Frequency Response 0 ∼ 20.0kHz
± 0.5
Note: 14. The passband and stopband frequencies scale with fs (system sampling rate).
e.g.) PB=0.4535×fs (@±0.05dB), SB=0.546×fs.
Note: 15. The calculating delay time which occurred by digital filtering. This time is from setting the 16/18/24bit data of
both channels to input register to the output of analog signal.
Rev. 0.5
2004/1
- 11 -