AK4640_05 AKM [Asahi Kasei Microsystems], AK4640_05 Datasheet - Page 14
AK4640_05
Manufacturer Part Number
AK4640_05
Description
16-Bit ?? CODEC with MIC/HP/SPK-AMP
Manufacturer
AKM [Asahi Kasei Microsystems]
Datasheet
1.AK4640_05.pdf
(78 pages)
- Current page: 14 of 78
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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 (Note 20)
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 20. The passband and stopband frequencies scale with fs (system sampling rate).
Note 21. The calculated delay time caused by digital filtering. This time is from the input of analog signal to setting of the
Note 22. These frequency responses scale with fs. If a high-level and low frequency signal is input, the analog output clips
MS0273-E-02
16bit 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 16bit 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 20)
(Note 20)
(Note 22)
MIN
MID
MAX
(Note 21)
(Note 21)
20Hz
100Hz
1kHz
20Hz
100Hz
1kHz
20Hz
100Hz
1kHz
±0.1dB
−1.0dB
−3.0dB
−3.0dB
−0.5dB
−0.1dB
±0.1dB
−0.7dB
−6.0dB
FILTER CHARACTERISTICS
Symbol
∆GD
GD
GD
SA
SA
PB
SB
PR
FR
PB
SB
PR
FR
FR
FR
FR
- 14 -
25.7
25.2
min
65
59
0
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
16.04
10.55
22.05
±1.0
20.0
21.1
17.0
20.0
16.8
5.74
2.92
5.94
4.71
0.14
typ
3.4
0.0
0.3
10
22
0
-
-
-
-
-
-
-
-
±0.01
max
17.4
±0.1
19.6
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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-
-
[AK4640]
Units
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
1/fs
1/fs
2005/04
dB
dB
Hz
Hz
Hz
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
µs
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