AK4425A Datasheet, PDF (7/27 Pages) Asahi Kasei Microsystems – 192kHz 24-Bit Stereo ΔΣ DAC with 2Vrms Output

[AK4425A]
SHARP ROLL-OFF FILTER CHARACTERISTICS
(Ta = 25°C; VDD=AVDD = +4.5 ∼ +5.5V; fs = 44.1 kHz; DEM = OFF; SLOW = “0”)
Parameter
Symbol
min
typ
max
Digital filter
Passband
±0.05dB (Note 11)
–6.0dB
PB
0
20.0
-
22.05
-
Stopband (Note 11)
SB
24.1
Passband Ripple
PR
± 0.02
Stopband Attenuation
SA
54
Group Delay (Note 12)
GD
-
19.3
-
Digital Filter + LPF
Frequency Response 20.0kHz fs=44.1kHz
FR
-
± 0.05
-
40.0kHz fs=96kHz
FR
-
± 0.05
-
80.0kHz fs=192kHz
FR
-
± 0.05
-
Note 11. The passband and stopband frequencies scale with fs(system sampling rate).
For example, PB=0.4535×fs (@±0.05dB), SB=0.546×fs.
Note 12. Calculated delay time caused by digital filter. This time is measured from setting the 16/24bit data
of both channels to input register to the output of the analog signal.
Units
kHz
kHz
kHz
dB
dB
1/fs
dB
dB
dB
SLOW ROLL-OFF FILTER CHARACTERISTICS
(Ta = 25°C; VDD=AVDD = +4.5 ∼ +5.5V; fs = 44.1kHz; DEM = OFF; SLOW = “1”)
Parameter
Symbol
min
typ
Digital Filter
Passband
±0.04dB (Note 13)
-3.0dB
Stopband
(Note 13)
Passband Ripple
PB
0
-
18.2
SB
39.2
PR
Stopband Attenuation
Group Delay
(Note 12)
SA
72
GD
-
19.3
Digital Filter + LPF
Frequency Response _20.0kHz fs=44.kHz
FR
-
+0/-5
40.0kHz ^fs=96kHz
FR
-
+0/-4
80.0kHz ^fs=192kHz
FR
-
+0/-5
Note 13. The passband and stopband frequencies scale with fs(system sampling rate).
For example, PB=0.185×fs (@±0.04dB), SB=0.888×fs.
max
8.1
-
± 0.005
-
-
-
-
Units
kHz
kHz
kHz
dB
dB
1/fs
dB
dB
dB
MS1127-E-01
-7-
2011/03