[AK4424]
FILTER CHARACTERISTICS
(Ta = 25°C; VDD=CVDD = +4.5
∼
+5.5V; fs = 44.1 kHz)
Parameter
Symbol
min
typ
max
Digital filter
(DEM = OFF)
PB
0
20.0
Passband
±0.05dB
-
22.05
-
-6.0dB
Stopband (Note
SB
24.1
Passband Ripple
PR
±
0.02
Stopband Attenuation
SA
54
Group Delay (Note
GD
-
19.3
-
De-emphasis Filter (DEM = ON)
De-emphasis Error
fs = 32kHz
-
-
–1.5/0
(Relative to 0Hz)
fs = 44.1kHz
-
-
–0.2/+0.2
fs = 48kHz
-
-
0/+0.6
Digital Filter + LPF
(DEM = OFF)
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
dB
dB
dB
DC CHARACTERISTICS
(Ta = 25°C; VDD=CVDD = +4.5
∼
+5.5V)
Parameter
Symbol
min
typ
High-Level Input Voltage
VIH
2.2
-
Low-Level Input Voltage
VIL
-
-
High-Level Input Voltage (Iout = -80uA)
VIH
VDD-0.4
-
Low-Level Input Voltage (Iout = 80uA)
VIL
-
-
Input Leakage Current (Note
Iin
-
-
Note 13. The DEM pin is not included. The DEM pin has internal pull-down resistor. (typ.100kΩ)
max
-
0.8
-
0.4
±
10
Units
V
V
V
V
μA
MS0935-E-03
-6-
2010/09
AKM [ ASAHI KASEI MICROSYSTEMS ]
