AK4564 Datasheet, PDF (10/48 Pages) Asahi Kasei Microsystems – 16BIT CODEC WITH BUILT-IN ALC AND MIC/HP/SPK-AMP

ASAHI KASEI
[AK4564]
FILTER CHARACTERISTICS
(Ta=25°C; AVDD, DVDD, SVDD=2.6 ∼ 3.6V, MVDD, HVDD=2.6∼ 5.5V; fs=48kHz; De-emphasis = OFF,
Digital EQ/HPF/LPF = OFF)
Parameter
Symbol
min
typ
max
Units
ADC Digital Filter (LPF):
Passband (Note 28)
±0.1dB
PB
0
18.9
kHz
-1.0dB
-
21.8
-
kHz
Stopband (Note 28)
-3.0dB
-
23.0
-
kHz
SB
29.4
kHz
Passband Ripple
Stopband Attenuation
Group Delay (Note 29)
PR
±0.1
dB
SA
65
dB
GD
-
19.0
-
1/fs
Group Delay Distortion
∆GD
0
µs
ADC Digital Filter (HPF):
Frequency Response (Note 28) -3.0dB
FR
-
3.7
-
Hz
-0.56dB
-
10
-
Hz
-0.15dB
-
20
-
Hz
DAC Digital Filter:
Passband (Note 28)
±0.1dB
PB
0
21.7
kHz
Stopband (Note 28)
Passband Ripple
Stopband Attenuation
-6.0dB
SB
PR
SA
-
24.0
-
kHz
26.2
kHz
±0.06
dB
43
dB
Group Delay (Note 29)
GD
-
15.8
-
1/fs
DAC Digital Filter + Analog Filter: (Note 30)
Frequency Response
0 ∼ 20.0kHz
FR
±0.5
dB
Note 28. The passband and stopband frequencies scale with fs (system sampling rate).
For example, ADC is PB=0.454*fs (@-1.0dB), DAC is PB=0.454*fs (@-0.1dB).
Note 29. The calculated delay time caused by digital filtering. This time is from the input of an analog signal to setting the
16bit data of both channels to the output register of the ADC and includes the group delay of the HPF.
For DAC, this time is from setting the 16bit data of both channels on input register to the output of analog signal.
Note 30. DAC à LOUT1/ROUT1, LOUT2/ROUT2
MS0140-E-01
- 10 -
2002/07