ak4538 AKM Semiconductor, Inc., ak4538 Datasheet - Page 10

• Manufacturer Part Number: ak4538
• Description: 16bit ?? Codec With Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
(Ta= 10 70 C; AVDD, DVDD, PVDD, HVDD=2.4 3.6V; fs=44.1kHz; DEM=OFF)
Parameter
ADC Digital Filter (Decimation LPF):
Passband
Stopband
Passband Ripple
Stopband Attenuation
Group Delay
Group Delay Distortion
ADC Digital Filter (HPF):
Frequency Response
DAC Digital Filter:
Passband
Stopband
Passband Ripple
Stopband Attenuation
Group Delay
DAC Digital Filter + SCF:
Frequency Response: 0 20.0kHz
BOOST Filter:
Frequency Response
Note 22. The passband and stopband frequencies scale with fs (system sampling rate).
Note 23. The calculated delay time caused by digital filtering. This time is from the input of analog signal to setting of the
Note 24. These frequency responses scale with fs. If a high-level and low frequency signal is input, the analog output clips
MS0198-E-01
16-bit data of both channels from the input register to the output register of the ADC. This time includes the group
delay of the HPF. For the DAC, this time is from setting the 16-bit data of both channels from the input register to
the output of analog signal.
to the full-scale.
For example, ADC is PB=0.454*fs (@-1.0dB), DAC is PB=0.454*fs (@-0.01dB).
(Note 22)
(Note 22)
(Note 22)
(Note 24)
MIN
MID
MAX
(Note 23)
(Note 23)
20Hz
100Hz
1kHz
20Hz
100Hz
1kHz
20Hz
100Hz
1kHz
0.1dB
1.0dB
3.0dB
3.0dB
0.5dB
0.1dB
0.1dB
6.0dB
FILTER CHARACTERISTICS
Symbol
GD
GD
PB
SA
PB
SA
SB
PR
FR
SB
PR
FR
FR
FR
FR
GD
- 10 -
27.0
24.1
min
65
43
0
0
-
-
-
-
-
-
-
-
-
-
-
-
22.05
16.04
10.55
20.0
21.1
17.0
16.8
5.74
2.92
5.94
4.71
0.14
typ
3.4
0.0
0.3
10
22
0.5
0
max
17.4
20.0
0.06
0.1
-
-
-
-
-
-
-
-
-
-
-
-
[AK4538]
Units
kHz
kHz
kHz
kHz
kHz
kHz
kHz
1/fs
1/fs
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Hz
Hz
Hz
2003/5
s