AK4618 Datasheet, PDF (9/60 Pages) Asahi Kasei Microsystems – 192kHz 24-bit 6ch/12ch Audio CODEC with Microphone Interface

FILTER CHARACTERISTICS (fs=48kHz)
(Ta= -40  +105C; AVDD1, AVDD2= TVDD=3.0 3.6V)
Parameter
Symbol
Min.
Typ.
ADC Digital Filter (Decimation LPF): Sharp roll-off mode
(SD_AD bit = “0”)
Passband (Note 8)
±0.16dB
PB
0
-
0.28dB
-
20.0
3.0dB
-
22.8
Stopband (Note 8)
SB
28.4
-
Stopband Attenuation
SA
71
-
Group Delay Distortion 0 ~ 20.0kHz
GD
-
0
Group Delay (Note 10)
GD
-
15.5
ADC Digital Filter (Decimation LPF): Short delay Sharp roll-off mode
(SD_AD bit = “1”)
Passband (Note 8)
±0.16dB
PB
0
-
0.28dB
-
20.0
3.0dB
-
22.8
Stopband (Note 8)
SB
28.4
Stopband Attenuation
SA
72
Group Delay Distortion 0 ~ 20.0kHz
GD
-
-
Group Delay (Note 10)
GD
-
5.5
ADC Digital Filter (HPF):
Frequency Response
3.0dB
FR
-
3.7
(Note 8)
0.5dB
-
10.9
0.1dB
-
24.0
[AK4618]
Max.
Unit
18.8
kHz
-
kHz
-
kHz
-
kHz
-
dB
-
1/fs
-
1/fs
18.8
kHz
-
kHz
-
kHz
-
-
-
-
2.4
1/fs
-
1/fs
-
Hz
-
Hz
-
Hz
015000617-E-00
-9-
2015/01