[AK5357]
FILTER CHARACTERISTICS (fs=48kHz)
(Ta=Tmin ∼ Tmax; VA=VD=2.7 ∼ 5.5V)
Parameter
Symbol
min
typ
max
Units
ADC Digital Filter (Decimation LPF):
Passband
(Note 9) ±0.1dB
−0.2dB
PB
0
-
-
18.9
-
-
kHz
kHz
kHz
kHz
dB
dB
μs
20.0
23.0
−3.0dB
Stopband
SB
PR
SA
ΔGD
GD
28
Passband Ripple
Stopband Attenuation
Group Delay Distortion
Group Delay
±0.04
68
0
16
(Note 10)
1/fs
ADC Digital Filter (HPF):
Frequency Response (Note 9) −3dB
−0.1dB
FR
1.0
6.5
Hz
Hz
FILTER CHARACTERISTICS (fs=96kHz)
(Ta=Tmin ∼ Tmax; VA=VD=2.7 ∼ 5.5V)
Parameter
Symbol
min
typ
max
Units
ADC Digital Filter (Decimation LPF):
Passband
(Note 9) ±0.1dB
−0.2dB
PB
0
-
-
37.8
-
-
kHz
kHz
kHz
kHz
dB
dB
μs
40.0
46.0
−3.0dB
Stopband
SB
PR
SA
ΔGD
GD
56
Passband Ripple
Stopband Attenuation
Group Delay Distortion
Group Delay
±0.04
68
0
16
(Note 10)
1/fs
ADC Digital Filter (HPF):
Frequency Response (Note 9) −3dB
−0.1dB
FR
2.0
13.0
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
2009/03
- 6 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
