ASAHI KASEI
[AK5352]
DIGITAL FILTER CHARACTERISTICS
(Ta=25
°C
; VA,VD,VB=5.0V±5%; fs=48kHz)
Low Pass Filter characteristics
Passband
-0.005dB
-0.02dB
-0.06dB
(Note 12 )
Symbol
PB
min
0
typ
max
21.5
21.768
22.0
±0.005
80
0
29.3
1.0
2.9
6.5
Units
kHz
Stopband
(Note 13 )
Passband Ripple
(Note 14 )
Stopband Attenuation (Note 13 ,Note 15 )
Group Delay Distortion
Group Delay
(Note 16 )
High Pass Filter characteristics
Frequency Response -3dB (Note 12 )
-0.5dB
-0.1dB
Note 12 :
Note 13 :
Note 14 :
Note 15 :
SB
PR
SR
∆
GD
GD
FR
26.5
kHz
dB
dB
us
1/fs
Hz
Hz
Hz
These frequencies scale with the sampling frequency(fs).
Stopband is 26.5kHz to 3.0455MHz at fs=48kHz.
Passband is DC to 21.5kHz at fs=48kHz.
The analog modulator samples the input at 3.072MHz for a system sampling rate of
fs=48kHz. These is no rejection of input signals at those bandwidths which are multiples of
the sampling frequency (n x 3.072MHz
±22kHz
;n=0,1,2,3
…
).
Note 16 : The calculation delay time occurred by digital filtering. This is the time from the input of
analog signal to setting the 20bit data of both channels to the output registers. GD=29.3/fs.
ELECTRICAL CHARACTERISTICS
Digital Characteristics
(Ta=25
°
C; VA,VD,VB=5.0V±5%)
Parameter
High-Level Input voltage
Low-Level Input voltage
High-Level Output voltage
Low-Level Output voltage
Input Leakage Current
Symbol
V
IH
V
IL
V
OH
V
OL
Iin
min
70%VD
-
VD-0.1
-
-
typ
-
-
-
-
-
max
-
30%VD
-
0.1
±10
Units
V
V
V
V
uA
Iout=-20uA
Iout=20uA
(Note 17 )
Note 17 : Except for pull-down and pull-up pins. TST1, TST2, TST3, TST4, SMODE2 pins have internal
pull-down device, HPFE pin has internal pull-up device. (TYP
.50kΩ)
0155-E-00
-8-
1997/1
AKM [ ASAHI KASEI MICROSYSTEMS ]
