ASAHI KASEI
[AK4562]
FILTER CHARACTERISTICS
(Ta=-20
∼
70°C; VA, VD=2.2
∼
3.0V, VT=1.8
∼
3.0; fs=44.1kHz; De-emphasis = OFF)
Parameter
Symbol
min
typ
ADC Digital Filter (Decimation LPF):
PB
0
Passband
(Note 12)
±0.1dB
20.0
-1.0dB
21.1
-3.0dB
Stopband
(Note 12)
SB
27.0
Passband Ripple
PR
Stopband Attenuation
SA
65
Group Delay
(Note 13)
GD
17.0
Group Delay Distortion
0
∆GD
ADC Digital Filter (HPF):
FR
3.4
Frequency Response (Note 12) -3dB
10
-0.5dB
22
-0.1dB
DAC Digital Filter:
PB
0
Passband
(Note 12)
±0.1dB
22.05
-6.0dB
Stopband
(Note 12)
SB
24.1
Passband Ripple
PR
Stopband Attenuation
SA
43
Group Delay
(Note 13)
GD
14.7
Group Delay Distortion
0
∆GD
DAC Digital Filter + Analog Filter
FR
Frequency Response
0
∼
20.0kHz
±0.5
max
17.4
Units
kHz
kHz
kHz
kHz
dB
dB
1/fs
us
Hz
Hz
Hz
20.0
kHz
kHz
kHz
dB
dB
1/fs
us
dB
±0.1
±0.06
Note : 12. The passband and stopband frequencies scale with fs (sampling frequency).
For examples, PB=0.454 x fs(@ADC: -1.0dB), PB=0.454 x fs(@DAC: -0.1dB).
Note : 13. The calculating delay time which occurred by digital filtering. This time is from the input of analog signal to
setting the 20bit data of both channels to the output register for ADC and include group delay of HPF. For
DAC, this time is from setting the data of both channels on input register to the output of analog signal.
DC CHARACTERISTICS
(Ta=-20
∼
70°C; VA, VD=2.2
∼
3.0V, VT=1.8
∼
3.0V)
Parameter
Symbol
High-Level Input Voltage
VIH
Low-Level Input Voltage
VIL
High-Level Output Voltage (Iout=-400uA)
VOH
Low-Level Output Voltage
(Iout=400uA)
VOL
Input Leakage Current
Iin
min
75%VT
-
VT-0.4
-
-
Typ
-
-
-
-
max
-
25%VT
-
0.4
±
10
Units
V
V
V
V
uA
MS0031-E-00
-8-
2000/05
AKM [ ASAHI KASEI MICROSYSTEMS ]
