AK5358A_08 Datasheet, PDF (6/18 Pages) Asahi Kasei Microsystems – 96kHz 24-Bit ΔΣ ADC

[AK5358A]
FILTER CHARACTERISTICS (fs=48kHz)
(Ta=-20°C ∼ 85°C; VA=4.5 ∼ 5.5V; VD=2.7 ∼ 5.5V)
Parameter
Symbol
min
typ
ADC Digital Filter (Decimation LPF):
Passband
(Note 10) ±0.1dB
PB
−0.2dB
−3.0dB
0
-
20.0
-
23.0
Stopband
SB
28
Passband Ripple
PR
Stopband Attenuation
SA
68
Group Delay Distortion
ΔGD
0
Group Delay
(Note 11)
GD
16
ADC Digital Filter (HPF):
Frequency Response (Note 10) −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=-20°C ∼ 85°C; VA=4.5 ∼ 5.5V; VD=2.7 ∼ 5.5V)
Parameter
Symbol
min
typ
max
Units
ADC Digital Filter (Decimation LPF):
Passband
(Note 10) ±0.1dB
PB
−0.2dB
−3.0dB
0
37.8
kHz
-
40.0
-
kHz
-
46.0
-
kHz
Stopband
SB
56
kHz
Passband Ripple
PR
±0.04
dB
Stopband Attenuation
SA
68
dB
Group Delay Distortion
ΔGD
0
μs
Group Delay
(Note 11)
GD
16
1/fs
ADC Digital Filter (HPF):
Frequency Response (Note 10) −3dB
FR
−0.1dB
2.0
Hz
13.0
Hz
Note 10. The passband and stopband frequencies scale with fs.
For example, PB=18.9kHz@±0.1dB is 0.39375 × fs.
Note 11. 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.
MS0511-E-02
-6-
2008/01