AK5397 Datasheet, PDF (10/44 Pages) Asahi Kasei Microsystems – 32-Bit Stereo Premium ADC

[AK5397]
(3) Sharp Roll-Off Filter Characteristics (fs=192kHz)
(Ta=25C; AVDD=4.75~5.25V; DVDD=3.03.6V; fs=192kHz)
Parameter
Symbol Min.
ADC Digital Filter (Decimation LPF):
Passband
(Note 13) Figure 5-(1) PB
0
PassBand Ripple (Note 14) Figure 5-(2) PR
-0.005
Frequency Response
-0.1dB
FR
-
(Note 14)
-3.0dB
-
-6.0dB
-
Stopband
(Note 14) Figure 5-(3) SB
105.60
Stopband Attenuation
Figure 5-(4) SA
100
Group Delay Distortion
GD
Group Delay
(Note 15) GD
ADC Digital Filter (HPF):
Frequency response
-3dB
FR
-
(Note 14)
-0.1dB
-
Typ.
89.52
94.33
95.97
0
36.3
0.93
6.1
Max.
Unit
87.32
kHz
+0.006
dB
-
kHz
-
kHz
-
kHz
3072
kHz
dB
1/fs
1/fs
-
Hz
-
Hz
(4) Sharp Roll-Off Filter Characteristics (fs=384kHz)
(Ta=25C; AVDD=4.75~5.25V; DVDD=3.03.6V; fs=384kHz)
Parameter
Symbol Min.
ADC Digital Filter (Decimation LPF):
Frequency Response
-0.1dB
FR
0
(Note 14)
-1.0B
-
-3.0dB
-
-6.0dB
-
Stopband
(Note 14) Figure 6-(1) SB
223.93
Stopband Attenuation
Figure 6-(2) SA
83
Group Delay Distortion
GD
Group Delay
(Note 15) GD
Typ.
60.67
86.93
107.70
125.30
0
10.6
Max.
Unit
-
kHz
-
kHz
-
kHz
-
kHz
3072
kHz
dB
1/fs
1/fs
(5) Sharp Roll-Off Filter Characteristics (fs=768kHz)
(Ta=25C; AVDD=4.75~5.25V; DVDD=3.03.6V; fs=768kHz)
Parameter
Symbol Min.
Typ.
Max.
Unit
ADC Digital Filter (Decimation LPF):
Frequency Response
-0.1dB
FR
0
34.01
-
kHz
(Note 14)
-1.0dB
-
101.51
-
kHz
-3.0dB
-
163.13
-
kHz
-6.0dB
-
216.16
-
kHz
Stopband
(Note 14) Figure 7-(1)
533.42
3072
KHz
Stopband Attenuation
Figure 7-(2)
85
dB
Group Delay Distortion
GD
0
1/fs
Group Delay
(Note 15) GD
8.4
1/fs
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
- 10 -
2014/11