AK5397 Datasheet, PDF (12/44 Pages) Asahi Kasei Microsystems – 32-Bit Stereo Premium ADC

[AK5397]
(3) Short Delay Filter Characteristics (fs=192kHz)
(Ta=25C; AVDD=4.75~5.25V; DVDD=3.03.6V; fs=192kHz; SDFIL=“L”)
Parameter
Symbol Min.
Typ.
Max.
Unit
ADC Digital Filter (Decimation LPF):
Passband
(Note 13) Figure 10-(1) PB
0
80.71
kHz
Passband Ripple (Note 14) Figure 10-(2) PR
-0.05
+0.02
dB
Frequency Response
(Note 14)
-0.1dB
-3.0dB
-6.0dB
PB
-
82.5
-
kHz
-
92.86
-
kHz
-
96.31
-
kHz
Stopband
(Note 14) Figure 10-(3) SB
116.67
3072
kHz
Stopband Attenuation
Figure 10-(4) SA
93
dB
Group Delay Distortion
Group Delay
GD
(Note 15) GD
±0.02
1/fs
12.2
1/fs
ADC Digital Filter (HPF):
Frequency response
(Note 14)
-3dB
-0.1dB
FR
-
-
0.93
6.1
-
Hz
-
Hz
Note 13. The definition of Passband is applied to the frequency which is within the limits of Passband
Ripple.
Note 14. The passband and stopband frequencies scales with fs. The reference frequency of these
responses is 1kHz.
Note 15. The calculated delay time induced by digital filtering. This time is from the input of an analog
signal to the setting of 32bit data both of channels to the ADC output register for ADC.
■ Minimum Phase Filter Characteristics
(1) Minimum Phase Filter Characteristics (fs=48kHz)
(Ta=25C; AVDD=4.75~5.25V; DVDD=3.03.6V; fs=48kHz; SDFIL=“H”)
Parameter
Symbol Min.
Typ.
ADC Digital Filter (Decimation LPF):
Passband
(Note 13) Figure 11-(1) PB
0
Passband Ripple (Note 14) Figure 11-(2) PR
-0.02
Frequency Response
-0.1dB
FR
-
21.97
(Note 14)
-3.0dB
-
23.49
-6.0dB
-
24.12
Stopband
(Note 14) Figure 11-(3) SB
27.97
Stopband Attenuation
Figure 11-(4) SA
93
Group Delay Distortion
GD
Group Delay
(Note 15) GD
3.5
ADC Digital Filter (HPF):
Frequency response
-3dB
FR
-
0.93
(Note 14)
-0.1dB
-
6.1
Max.
Unit
21.75
kHz
+0.04
dB
-
kHz
-
kHz
-
kHz
3072
kHz
dB
±1.5
1/fs
1/fs
-
Hz
-
Hz
014011535-E-00
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2014/11