ASAHI KASEI
[AK5359]
FILTER CHARACTERISTICS (fs=48kHz)
(Ta=Tmin
∼
Tmax; VA=4.5
∼
5.5V; VD=3.0
∼
5.5V)
Parameter
Symbol
min
typ
ADC Digital Filter (Decimation LPF):
Passband
(Note 8)
±0.1dB
PB
0
-
20.0
−0.2dB
-
23.0
−3.0dB
Stopband
SB
28
Passband Ripple
PR
Stopband Attenuation
SA
68
Group Delay Distortion
0
∆
GD
Group Delay
(Note 9)
GD
16
ADC Digital Filter (HPF):
Frequency Response (Note 8)
−3dB
FR
1.0
6.5
−0.1dB
FILTER CHARACTERISTICS (fs=96kHz)
(Ta=Tmin
∼
Tmax ; VA=4.5
∼
5.5V; VD=3.0
∼
5.5V)
Parameter
Symbol
min
typ
ADC Digital Filter (Decimation LPF):
Passband
(Note 8)
±0.1dB
PB
0
-
40.0
−0.2dB
-
46.0
−3.0dB
Stopband
SB
56
Passband Ripple
PR
Stopband Attenuation
SA
68
Group Delay Distortion
0
∆GD
Group Delay
(Note 9)
GD
16
ADC Digital Filter (HPF):
Frequency Response (Note 8)
−3dB
FR
2.0
13.0
−0.1dB
max
18.9
-
-
±0.04
Units
kHz
kHz
kHz
kHz
dB
dB
µ
s
1/fs
Hz
Hz
max
37.8
-
-
±0.04
Units
kHz
kHz
kHz
kHz
dB
dB
µs
1/fs
Hz
Hz
FILTER CHARACTERISTICS (fs=192kHz)
(Ta=Tmin
∼
Tmax ; VA=4.5
∼
5.5V; VD=3.0
∼
5.5V)
Parameter
Symbol
min
typ
max
Units
ADC Digital Filter (Decimation LPF):
PB
0
Passband
(Note 8)
±
0.1dB
61.4
kHz
-
62.7
-
kHz
−
0.2dB
-
90.9
-
kHz
−
3.0dB
Stopband
SB
111
kHz
Passband Ripple
PR
dB
±0.02
Stopband Attenuation
SA
70
dB
Group Delay Distortion
0
∆GD
µs
Group Delay
(Note 9)
GD
16
1/fs
ADC Digital Filter (HPF):
Frequency Response (Note 8)
−3dB
FR
4.0
Hz
26.0
Hz
−0.1dB
Note 8. The passband and stopband frequencies scale with fs.
For example, PB=18.9kHz@±0.1dB is 0.39375
×
fs.
Note 9. 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.
MS0428-E-00
-6-
2005/09
AKM [ ASAHI KASEI MICROSYSTEMS ]
