ASAHI KASEI
[AK4528]
Parameter
Power Supplies
Power Supply Current
Normal Operation (PDN=“H”)
VA
VD+VT
(fs=44.1kHz)
(fs=96kHz)
Power-down mode (PDN=“L”)
(Note 7)
VA
VD+VT
Note: 7. All digital input pins are held VD or DGND.
min
typ
max
Units
38
10
18
10
10
57
20
36
100
100
mA
mA
mA
µA
µA
FILTER CHARACTERISTICS
(Ta=25°C; VA, VD=4.75
∼
5.25V; VT=2.7
∼
5.25V; fs=44.1kHz; DEM=OFF)
Parameter
Symbol
min
ADC Digital Filter (Decimation LPF):
Passband
(Note 8)
−0.005dB
PB
0
−0.02dB
-
−0.06dB
-
−6.0dB
-
Stopband
SB
24.34
Passband Ripple
PR
Stopband Attenuation
SA
80
Group Delay
(Note 9)
GD
Group Delay Distortion
∆GD
ADC Digital Filter (HPF):
Frequency Response (Note 8)
−3dB
FR
−0.5dB
−0.1dB
DAC Digital Filter:
Passband
(Note 8)
−0.01dB
PB
0
−6.0dB
-
Stopband
SB
24.1
Passband Ripple
PR
Stopband Attenuation
SA
75
Group Delay
(Note 9)
GD
DAC Digital Filter + SCF:
Frequency Response:
FR
0
∼
20.0kHz
∼
40kHz (Note 10)
typ
max
19.76
-
-
-
±0.005
Units
kHz
kHz
kHz
kHz
kHz
dB
dB
1/fs
µs
Hz
Hz
Hz
20.02
20.20
22.05
31
0
0.9
2.7
6.0
20.0
-
±0.005
30
22.05
kHz
kHz
kHz
dB
dB
1/fs
±0.2
±0.3
dB
dB
Note: 8. The passband and stopband frequencies scale with fs.
For example, 20.02kHz at -0.02dB is 0.454 x fs. The reference frequency of these responses is 1kHz.
9. The calculating delay time which occurred by digital filtering. This time is from the input of analog signal to
setting the 24bit data of both channels to the output register for ADC.
For DAC, this time is from setting the 24bit data of both channels on input register to the output of analog signal.
10. fs=96kHz.
MS0011-E-01
-7-
2004/01
AKM [ ASAHI KASEI MICROSYSTEMS ]
