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AK4633EN Datasheet, PDF (12/83 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK-AMP
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[AK4633]
FILTER CHRACTERISTICS
(Ta = 25C; AVDD =2.2  3.6V, DVDD =1.6  3.6V, SVDD =2.2  4.0V; fs=8kHz)
Parameter
Symbol
Min.
Typ.
Max.
Unit
ADC Digital Filter (Decimation LPF):
Passband
(Note 19) 0.16dB
PB
0
-
3.0
kHz
0.66dB
-
3.5
-
kHz
1.1dB
-
3.6
-
kHz
6.9dB
-
4.0
-
kHz
Stopband
(Note 19)
SB
4.7
-
-
kHz
Passband Ripple
PR
-
-
0.1
dB
Stopband Attenuation
SA
73
-
-
dB
Group Delay (Note 20)
GD
-
16
-
1/fs
Group Delay Distortion
GD
-
0
-
s
DAC Digital Filter (Decimation LPF):
Passband
(Note 19) 0.16dB
PB
0
-
3.0
0.54dB
-
3.5
-
1.0dB
-
3.6
-
6.7dB
-
4.0
-
Stopband
(Note 19)
SB
4.7
-
-
kHz
Passband Ripple
PR
-
-
0.1
dB
Stopband Attenuation
SA
73
-
-
dB
Group Delay
(Note 20)
GD
-
16
-
1/fs
Group Delay Distortion
GD
-
0
-
s
DAC Digital Filter + Analog Filter:
Frequency Response: 0  3.4kHz
FR
-
1.0
-
dB
Note 19. The passband and stopband frequencies are proportional to fs (system sampling rate).
For example, ADC is PB=3.6kHz (@-1.0dB)= 0.45 x fs. A reference of frequency response is 1kHz.
Note 20. The calculated delay time caused by digital filtering. This time is from the input of analog signal to setting of the
16-bit data of a channel from the input register to the output register of the ADC.
For the DAC, this time is from setting the 16-bit data of a channel from the input register to the output of analog
signal.
In case of selected the path through the programming filter (1st HPF + 2-band Equalizer + ALC), the Group Delay
should be increased to 2/fs without the phase changing by IIR filter.
DC CHRACTERISTICS
(Ta = 25C; AVDD =2.2  3.6V, DVDD =1.6  3.6V, SVDD =2.2  4.0V)
Parameter
Symbol
Min.
Typ.
Max.
Unit
High-Level Input Voltage
(DVDD ≥ 2.2V)
VIH 70%DVDD
-
-
V
(DVDD < 2.2V)
80%DVDD
-
-
V
Low-Level Input Voltage
(DVDD ≥ 2.2V)
VIL
-
-
30%DVDD V
(DVDD < 2.2V)
-
-
20%DVDD V
High-Level Output Voltage
(Iout=80A)
VOH DVDD0.4
-
-
V
Low-Level Output Voltage
(Iout= 80A)
VOL
-
-
0.4
V
Input Leakage Current
Iin
-
-
10
A
MS0447-E-06
- 12 -
2015/10
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