AK5388_09 Datasheet, PDF (8/31 Pages) Asahi Kasei Microsystems – 120dB 24-bit 192kHz 4-Channel ADC

FILTER CHARACTERISTICS (fs=48kHz)
(Ta=25°C; AVDD1/2=4.75 ∼ 5.25V; DVDD1/2=3.0 ∼ 3.6V; DFS1 = “L”, DFS0 = “L”)
Parameter
Symbol
min
typ
ADC Digital Filter (Decimation LPF):
Passband
(Note 9) −0.01dB
PB
−0.1dB
−3.0dB
−6.0dB
0
-
22.0
-
23.8
-
24.4
Stopband
SB
27.9
Passband Ripple
PR
Stopband Attenuation
SA
80
Group Delay
(Note 10)
GD
12.6
Group Delay Distortion
ΔGD
±0.01
ADC Digital Filter (HPF):
Frequency Response (Note 9) −3dB
FR
1.0
−0.1dB
6.5
max
21.6
-
-
-
±0.01
[AK5388]
Units
kHz
kHz
kHz
kHz
kHz
dB
dB
1/fs
μs
Hz
Hz
FILTER CHARACTERISTICS (fs=96kHz)
(Ta=25°C; AVDD1/2=4.75 ∼ 5.25V; DVDD1/2=3.0 ∼ 3.6V; DFS1 = “L”, DFS0 = “H”)
Parameter
Symbol
min
typ
max
Units
ADC Digital Filter (Decimation LPF):
Passband
(Note 9) −0.01dB
PB
−0.1dB
−3.0dB
−6.0dB
0
43.3
kHz
-
44.2
-
kHz
-
47.6
-
kHz
-
48.9
-
kHz
Stopband
Passband Ripple
SB
55.9
PR
kHz
±0.01
dB
Stopband Attenuation
SA
80
dB
Group Delay
(Note 10)
GD
12.6
1/fs
Group Delay Distortion
ΔGD
±0.013
μs
ADC Digital Filter (HPF):
Frequency Response (Note 9) −3dB
FR
1.0
Hz
−0.1dB
6.5
Hz
Note 9. The passband and stopband frequencies scale with fs. The reference frequency of these responses is 1kHz.
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.
MS1096-E-01
-8-
2009/08