ak4561 AKM Semiconductor, Inc., ak4561 Datasheet - Page 10

• Manufacturer Part Number: ak4561
• Description: 16bit Codec With Built-in Alc And Mic/hp-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
(Ta=25 C; VA=VD=2.6 3.3V; fs=48kHz; De-emphasis = OFF)
ADC Digital Filter (LPF):
Passband (Note 25)
Stopband (Note 25)
Passband Ripple
Stopband Attenuation
Group Delay (Note 26)
Group Delay Distortion
ADC Digital Filter (HPF):
Frequency Response (Note 25)
DAC Digital Filter:
Passband (Note 25)
Stopband (Note 25)
Passband Ripple
Stopband Attenuation
Group Delay (Note 26)
DAC Digital Filter + Analog Filter:
Frequency Response
Note 25. The passband and stopband frequencies scale with fs (system sampling rate).
Note 26. The calculating delay time which occured by digital filtering, This time is from the input of analog signal to
Rev. 0.9
For example, ADC is PB=0.454*fs (@-1.0dB), DAC is PB=0.454*fs (@-0.1dB).
setting the 16 bit data of both channels on input register to the output register of ADC. And this time include
group delay of HPF. For DAC, this time is from setting the 16 bit data of both channels on input register to the
output of analog signal.
Parameter
0 20.0kHz
-1.0dB
-3.0dB
-3.0dB
-0.56dB
-0.15dB
-6.0dB
0.1dB
0.1dB
FILTER CHARACTERISTICS
AKM CONFIDENTIAL
Symbol
GD
GD
SA
SA
PB
SB
PR
FR
PB
SB
PR
FR
GD
- 10 -
29.4
26.2
min
65
43
0
0
-
-
-
-
-
-
-
-
21.8
23.0
17.0
24.0
14.8
typ
3.7
10
20
0.5
0
max
18.9
21.7
0.06
0.1
-
-
-
-
-
-
-
-
[AK4561]
Units
kHz
kHz
kHz
kHz
kHz
kHz
kHz
1/fs
1/fs
2000/09
dB
dB
Hz
Hz
Hz
dB
dB
dB
us