AK7738VQ Datasheet, PDF (22/42 Pages) Asahi Kasei Microsystems – Multi DSP with 5ch ADC + 4ch DAC + 8ch SRC

1-2 Slow Roll-Off Filter (ADSD bit = “0”, ADSL bit = “1”)
fs=48kHz
Parameter
Symbol
min
typ
SLOW ROLL-OFF
Passband (Note 29)
0dB ~ -0.074dB
-6.0dB
PB
PB
0
21.9
Stopband
(Note 29)
SB
36.5
Stopband Attenuation
SA
85
Group Delay Distortion : 0Hz~20kHz
GD
0
Group Delay
(Note 30)
GD
7
ADC Digital Filter(HPF)
Frequency Response
-3.0dB
FR
1.0
fs=96kHz
Parameter
Symbol
min
typ
SLOW ROLL-OFF
Passband (Note 29)
0dB ~ -0.074dB
-6.0dB
PB
PB
0
43.7
Stopband
(Note 29)
SB
73
Stopband Attenuation
SA
85
Group Delay Distortion : 0Hz~40kHz
GD
0
Group Delay
(Note 30)
GD
7
ADC Digital Filter(HPF)
Frequency Response
-3.0dB
FR
1.9
fs=192kHz
Parameter
Symbol
min
typ
SLOW ROLL-OFF
Passband (Note 29)
0dB ~ -0.7dB
-6.0dB
PB
PB
0
79.9
Stopband
(Note 29)
SB
146
Stopband Attenuation
SA
85
Group Delay Distortion : 0Hz~40kHz
GD
0
Group Delay
(Note 30)
GD
8
ADC Digital Filter(HPF)
Frequency Response
-3.0dB
FR
3.88
[AK7738]
max
Unit
12.5
kHz
kHz
kHz
dB
1/fs
1/fs
Hz
max
Unit
25
kHz
kHz
kHz
dB
1/fs
1/fs
Hz
max
Unit
49.9
kHz
kHz
kHz
dB
1/fs
1/fs
Hz
015000122-E-00-PB
- 22 -
2015/01