ASAHI KASEI
[AK5392]
FILTER CHARACTERISTICS
(Ta=25°C; VA=5.0V±5%;VD=3.0 5.25V; fs=48kHz)
Parameter
Symbol
min
typ
max
21.768
±0.001
0
Units
ADC Digital Filter(Decimation LPF):
Passband
(Note 6 )
(Note 6 )
PB
SB
0
kHz
kHz
dB
Stopband
26.232
Passband Ripple
Stopband Attenuation
Group Delay Distortion
Group Delay
PR
(Note 7 )
(Note 8 )
SA
110
dB
∆GD
us
GD
FR
38.7
1/fs
ADC Digital Filter(HPF):
Freqency response (Note 6 )
-3dB
1.0
2.9
6.5
Hz
Hz
Hz
-0.5dB
-0.1dB
Notes: 6 . The passband and stopband frequencies scale with fs. PB=0.4535fs, SB=0.5465fs
7 . The analog modulator samples the input at 6.144MHz for an output word rate of 48kHz.
There is no rejection of input signals which are multiples of the sampling frequency
…
(that is: there is no rejection for n x 6.144MHz±21.768kHz, where n=1,2,3 ).
8 . The calculating delay time which occurred by digital filtering. This time is from the input of analog signal to
setting the 24bit data of both channels to the output register. 40.7/fs at HPF:ON.
DIGITAL CHARACTERISTICS
(Ta=25°C; VA=5.0V±5%; VD=3.0 5.25V)
Parameter
High-Level Input Voltage
Symbol
VIH
min
typ
max
Units
V
70%VD
-
-
-
-
30%VD
-
Low-Level Input Voltage
VIL
-
V
High-Level Output Voltage Iout=-20uA
Low-Level Output Voltage Iout=20uA
Input Leakage Current
VOH
VOL
Iin
VD-0.1
V
-
-
0.1
V
-
±10
uA
0188-E-01
1997/11
- 7 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
