[AK5357]
FILTER CHARACTERISTICS (fs=48kHz)
(Ta=Tmin
∼
Tmax; VA=VD=2.7
∼
5.5V)
Parameter
Symbol
min
typ
ADC Digital Filter (Decimation LPF):
Passband
9)
±0.1dB
PB
0
−0.2dB
-
20.0
−3.0dB
-
23.0
Stopband
SB
28
Passband Ripple
PR
Stopband Attenuation
SA
68
Group Delay Distortion
ΔGD
0
Group Delay
GD
16
ADC Digital Filter (HPF):
Frequency Response (Note
9)
−3dB
FR
1.0
−0.1dB
6.5
max
18.9
-
-
±0.04
Units
kHz
kHz
kHz
kHz
dB
dB
μs
1/fs
Hz
Hz
FILTER CHARACTERISTICS (fs=96kHz)
(Ta=Tmin
∼
Tmax; VA=VD=2.7
∼
5.5V)
Parameter
Symbol
min
typ
ADC Digital Filter (Decimation LPF):
Passband
9)
±0.1dB
PB
0
−0.2dB
-
40.0
−3.0dB
-
46.0
Stopband
SB
56
Passband Ripple
PR
Stopband Attenuation
SA
68
Group Delay Distortion
ΔGD
0
Group Delay
GD
16
ADC Digital Filter (HPF):
Frequency Response (Note
9)
−3dB
FR
2.0
−0.1dB
13.0
max
37.8
-
-
±0.04
Units
kHz
kHz
kHz
kHz
dB
dB
μs
1/fs
Hz
Hz
Note 9. The passband and stopband frequencies scale with fs.
For example, PB=18.9kHz@±0.1dB is 0.39375
×
fs.
Note 10. The calculated delay time induced by digital filtering. This time is from the input of an analog signal to the
setting of 24bit data both channels to the ADC output register for ADC.
MS0294-E-03
-6-
2009/03
AKM [ ASAHI KASEI MICROSYSTEMS ]
