[AK4627]
FILTER CHARACTERISTICS
(Ta=25°C; AVDD=DVDD=4.5∼5.5V; TVDD=2.7∼5.5V; fs=48kHz)
Parameter
Symbol
min
typ
max
Unit
ADC Digital Filter (Decimation LPF):
Passband
PB
0
18.9
kHz
±0.1dB
-
20.0
-
kHz
-0.2dB
-
23.0
-
kHz
-3.0dB
Stopband
SB
28
kHz
Passband Ripple
PR
dB
±0.04
Stopband Attenuation
SA
68
dB
Group Delay
GD
16
1/fs
Group Delay Distortion
0
ΔGD
μs
ADC Digital Filter (HPF):
Frequency Response
-3dB
FR
1.0
Hz
-0.1dB
6.5
Hz
DAC Digital Filter:
Passband
-0.1dB
PB
0
21.8
kHz
-6.0dB
-
24.0
-
kHz
Stopband
SB
26.2
kHz
Passband Ripple
PR
dB
±0.02
Stopband Attenuation
SA
54
dB
Group Delay
GD
19.2
1/fs
DAC Digital Filter + Analog Filter:
FR
dB
Frequency Response: 0
∼
20.0kHz
±0.2
FR
dB
40.0kHz (Note
±0.3
FR
dB
80.0kHz (Note
±1.0
Note 15. The passband and stopband frequencies scale with fs.
For example, 21.8kHz at –0.1dB is 0.454 x fs.
Note 16. The calculating delay time which occurred by digital filtering. This time is from setting the input of analog signal
to setting the 24bit data of both channels to the output register for ADC.
For DAC, this time is from setting the 20/24bit data of both channels on input register to the output of analog
signal.
Note 17. 40.0kHz; fs=96kHz , 80.0kHz; fs=192kHz.
DC CHARACTERISTICS
(Ta=25°C; AVDD=DVDD=4.5∼5.5V; TVDD=2.7∼5.5V)
Parameter
Symbol
min
High-Level Input Voltage
VIH
2.2
Low-Level Input Voltage
VIL
-
High-Level Output Voltage
(SDTO1-2 pins:
Iout=-100μA)
VOH
TVDD-0.5
(DZF1, DZF2 pins:
Iout=-100μA)
VOH
AVDD-0.5
Low-Level Output Voltage
(SDTO1-2, DZF1, DZF2 pins: Iout= 100μA)
VOL
-
(SDA pin:
Iout= 3mA)
VOL
-
Input Leakage Current
Iin
-
typ
-
-
-
-
-
-
-
max
-
0.8
-
-
0.5
0.4
±10
Unit
V
V
V
V
V
V
μA
MS1278-E-02
-9-
2012/03
AKM [ ASAHI KASEI MICROSYSTEMS ]
