AK7738VQ Datasheet, PDF (21/42 Pages) Asahi Kasei Microsystems – Multi DSP with 5ch ADC + 4ch DAC + 8ch SRC

[AK7738]
9. Digital Filter Characteristics
1. ADC Block
(Ta=25C; AVDD=3.0~3.6V; LVDD=3.0~3.6V; TVDD1=1.7~3.6V; TVDD2=1.7~3.6V;
VDD33=3.0~3.6V; AVSS=DVSS1=DVSS2=DVSS3=0V)
1-1 Sharp Roll-Off Filter (ADSD bit = “0”, ADSL bit = “0”)
fs=48kHz
Parameter
Symbol
min
typ
SHARP ROLL-OFF
Passband (Note 29)
0dB ~ -0.06dB
-6.0dB
PB
PB
0
24.4
Stopband
(Note 29)
SB
27.8
Stopband Attenuation
SA
85
Group Delay Distortion : 0Hz~20kHz
GD
0
Group Delay
(Note 30)
GD
19
ADC Digital Filter(HPF)
Frequency Response
-3.0dB
FR
1.0
max
Unit
22.1
kHz
kHz
kHz
dB
1/fs
1/fs
Hz
fs=96kHz
Parameter
Symbol
min
typ
SHARP ROLL-OFF
Passband (Note 29)
0dB ~ -0.06dB
-6.0dB
PB
PB
0
48.7
Stopband
(Note 29)
SB
55.6
Stopband Attenuation
SA
85
Group Delay Distortion : 0Hz~40kHz
GD
0
Group Delay
(Note 30)
GD
19
ADC Digital Filter(HPF)
Frequency Response
-3.0dB
FR
1.9
max
Unit
44.2
kHz
kHz
kHz
dB
1/fs
1/fs
Hz
fs=192kHz
Parameter
Symbol
min
typ
max
Unit
SHARP ROLL-OFF
Passband (Note 29)
0dB ~ -0.04dB
-6.0dB
PB
PB
0
83.7
kHz
100.1
kHz
Stopband
(Note 29)
SB
122.9
kHz
Stopband Attenuation
SA
85
dB
Group Delay Distortion : 0Hz~40kHz
GD
0
1/fs
Group Delay
(Note 30)
GD
15
1/fs
ADC Digital Filter(HPF)
Frequency Response
-3.0dB
FR
3.9
Hz
015000122-E-00-PB
- 21 -
2015/01