AK5397 Datasheet, PDF (13/44 Pages) Asahi Kasei Microsystems – 32-Bit Stereo Premium ADC

[AK5397]
(2) Minimum Phase Filter Characteristics (fs=96kHz)
(Ta=25C; AVDD=4.75~5.25V; DVDD=3.03.6V; fs=96kHz; SDFIL=“H”)
Parameter
Symbol Min.
Typ.
ADC Digital Filter (Decimation LPF):
Passband
(Note 13) Figure 12-(1) PB
0
Passband Ripple (Note 14) Figure 12-(2) PR
-0.04
Frequency Response
(Note 14)
-0.1dB
-3.0dB
-6.0dB
FR
-
43.87
-
46.98
-
48.26
Stopband
(Note 14) Figure 12-(3) SB
55.96
Stopband Attenuation
Figure 12-(4) SA
93
Group Delay Distortion
GD
Group Delay
(Note 15) GD
3.4
ADC Digital Filter (HPF):
Frequency response
(Note 14)
-3dB
-0.1dB
FR
-
0.93
-
6.1
Max.
Unit
43.55
kHz
+0.02
dB
-
kHz
-
kHz
-
kHz
3072
kHz
dB
±1.5
1/fs
1/fs
-
Hz
-
Hz
(3) Minimum Phase Filter Characteristics (fs=192kHz)
(Ta=25C; AVDD=4.75~5.25V; DVDD=3.03.6V; fs=192kHz; SDFIL=“H”)
Parameter
Symbol Min.
Typ.
Max.
Unit
ADC Digital Filter (Decimation LPF):
Passband
(Note 13) Figure 13-(1) PB
0
80.97
kHz
Passband Ripple (Note 14) Figure 13-(2) PR
-0.045
+0.015
dB
Frequency Response
-0.1dB
FR
-
82.55
-
kHz
(Note 14)
-3.0dB
-
92.02
kHz
-6.0dB
-
95.44
-
kHz
Stopband
(Note 14) Figure 13-(3) SB
115.57
3072
kHz
Stopband Attenuation
Figure 13-(4) SA
93
dB
Group Delay Distortion
GD
±1.6
1/fs
Group Delay
(Note 15) GD
4.2
1/fs
ADC Digital Filter (HPF):
Frequency response
-3dB
FR
-
0.93
-
Hz
(Note 14)
-0.1dB
-
6.1
-
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.
014011535-E-00
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2014/11