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AKD4634 Datasheet(PDF) 9 Page - Asahi Kasei Microsystems

Part # AKD4634
Description  16-Bit Mono CODEC with ALC & MIC/SPK-AMP
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Manufacturer  AKM [Asahi Kasei Microsystems]
Direct Link  http://www.akm.com
Logo AKM - Asahi Kasei Microsystems

AKD4634 Datasheet(HTML) 9 Page - Asahi Kasei Microsystems

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[AK4634]
Rev. 0.5
2007/10
- 9 -
FILTER CHRACTERISTICS
(Ta =
−30 ∼ 85°C; AVDD = 2.2 ∼ 3.6V; DVDD = 1.6 ∼ 3.6V, SVDD = 2.2 ∼ 4.0V; fs=8kHz)
Parameter
Symbol
min
typ
max
Units
ADC Digital Filter (Decimation LPF):
Passband
(Note 19)
±0.16dB
−0.66dB
−1.1dB
−6.9dB
PB
0
-
-
-
-
3.5
3.6
4.0
3.0
-
-
-
kHz
kHz
kHz
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
ΔGD
-
0
-
μs
DAC Digital Filter (Decimation LPF):
Passband
(Note 19)
±0.16dB
−0.54dB
−1.0dB
−6.7dB
PB
0
-
-
-
-
3.5
3.6
4.0
3.0
-
-
-
dB
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
ΔGD
-
0
-
μs
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 of PB = 3.6kHz is 0.45*fs (@
−1.0dB). 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. When there is not a
phase change with the IIR filter, the group delay of the programmable filter (primary HPF + primary LPF +
5-band Equalizer + ALC) increases for 2/fs than a value of an above mention.
DC CHRACTERISTICS
(Ta =
−30 ~ 85°C; AVDD = 2.2 ∼ 3.6V, DVDD = 1.6 ∼ 3.6V, SVDD = 2.2 ∼ 4.0V)
Parameter
Symbol
min
typ
max
Units
High-Level Input Voltage
(DVDD ≥ 2.2V)
(DVDD < 2.2V)
Low-Level Input Voltage
(DVDD ≥ 2.2V)
(DVDD < 2.2V)
VIH
VIL
70%DVDD
80%DVDD
-
-
-
-
-
-
-
-
30%DVDD
20%DVDD
V
V
V
V
High-Level Output Voltage
(Iout =
−80μA)
Low-Level Output Voltage
(Except SDA pin: Iout = 80
μA)
(SDA pin, 2.0V
≤ DVDD ≤ 3.6V: Iout = 3mA)
(SDA pin, 1.6V
≤ DVDD < 2.0V: Iout = 3mA)
VOH
VOL1
VOL2
VOL2
DVDD
−0.2
-
-
-
-
-
-
-
-
0.2
0.4
20%DVDD
V
V
V
Input Leakage Current
Iin
-
-
±10
μA


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