AK4618 Datasheet, PDF (12/60 Pages) Asahi Kasei Microsystems – 192kHz 24-bit 6ch/12ch Audio CODEC with Microphone Interface

[AK4618]
FILTER CHARACTERISTICS (fs=192kHz)
(Ta= -40  +105C; AVDD1, AVDD2= TVDD=3.0 3.6V)
Parameter
Symbol
Min.
Typ.
Max.
Unit
DAC Digital Filter (LPF): Sharp roll-off mode (DEM=OFF; SD_DA bit=“0” ; SLOW bit=“0”)
Passband
Stopband
(Note 8)
±0.06dB
6.0dB
PB
0
-
-
96.0
SB
104.8
-
87.2
kHz
-
kHz
-
kHz
Passband Ripple
Stopband Attenuation
PR
-0.06
+0.06
dB
SA
52
-
-
dB
Group Delay Distortion 0 ~ 80.0kHz
GD
-
0
-
1/fs
Group Delay
(Note 10)
GD
-
19.3
-
1/fs
DAC Digital Filter + Analog Filter:
Frequency Response 0 ~ 80.0kHz (Note 11)
FR
-
-1.0
-
dB
DAC Digital Filter (LPF): Slow roll-off mode (DEM=OFF; SD_DA bit=“0” ; SLOW bit=“1”)
Passband
(Note 9) ±0.06dB
PB
6.0dB
0
39.2
kHz
-
90.0
-
kHz
Stopband
SB
160.4
kHz
Passband Ripple
PR
-4.0
+0.06
dB
Stopband Attenuation
SA
50
dB
Group Delay Distortion 0 ~ 80.0kHz
GD
0
1/fs
Group Delay
(Note 10)
GD
6.8
1/fs
DAC Digital Filter + Analog Filter:
Frequency Response 0 ~ 80.0kHz (Note 11)
FR
-5.0
dB
DAC Digital Filter (LPF): Short delay Sharp roll-off mode (DEM=OFF; SD_DA bit=“1”; SLOW bit=“0”)
Passband
Stopband
(Note 8) ±0.06dB
6.0dB
PB
0
-
-
96.0
SB
104.8
-
87.2
kHz
-
kHz
-
kHz
Passband Ripple
PR
-0.06
+0.06
dB
Stopband Attenuation
SA
52
-
-
dB
Group Delay Distortion 0 ~ 80.0kHz
GD
-
-
1.7
1/fs
Group Delay
(Note 10)
GD
-
6.2
-
1/fs
DAC Digital Filter + Analog Filter:
Frequency Response 0 ~ 80.0kHz (Note 11)
FR
-1.0
dB
DAC Digital Filter (LPF): Short delay Slow roll-off mode (DEM=OFF; SD_DA bit=“1” ; SLOW bit=“1”)
Passband
Stopband
(Note 9) ±0.06dB
PB
0
-
6.0dB
-
90.0
SB
160.4
-
39.2
kHz
-
kHz
-
kHz
Passband Ripple
Stopband Attenuation
PR
-4.0
+0.06
dB
SA
50
-
-
dB
Group Delay Distortion 0 ~ 80.0kHz
GD
-
-
0.5
1/fs
Group Delay
(Note 10)
GD
-
5.8
-
1/fs
DAC Digital Filter + Analog Filter:
Frequency Response 0 ~ 80.0kHz (Note 11)
FR
-
-5.0
-
dB
Note 8. The passband and stopband frequencies scale with fs (sampling frequency). For example, ADC: Passband
(0.1dB) = 0.375 x fs, DAC: Passband (0.06dB) = 0.454 x fs (@ fs=48kHz).
Note 9. The passband and stopband frequencies scale with fs (sampling frequency). For example, DAC: Passband
(0.06dB) = 0.204 x fs (@ fs=48kHz).
Note 10. The calculated delay time is resulting from digital filtering. For the ADC, this time is from the input of an analog
signal to the setting of 24bit data for both channels to the ADC output register. For the DAC, this time is from
setting the 24 bit data both channels at the input register to the output of an analog signal.
Note 11. The reference frequency is 1kHz.
015000617-E-00
- 12 -
2015/01