ASAHI KASEI
[AK4702]
FILTER CHARACTERISTICS (AUDIO)
(Ta = 25°C; VP=11.4~12.6V, VD = 4.75~5.25V, VVD1=VVD2 = 4.75~5.25V; fs = 48kHz; DEM0 = “1”, DEM1 = “0”)
Parameter
Digital filter
Passband
Symbol
min
typ
max
Units
±0.05dB
-6.0dB
(Note: 13)
(Note: 13)
PB
0
-
21.77
-
kHz
kHz
kHz
dB
dB
1/fs
24.0
Stopband
Passband Ripple
Stopband Attenuation
Group Delay
SB
PR
SA
GD
26.23
± 0.06
54
-
(Note: 14)
19.1
-
Digital Filter + LPF
Frequency Response 0 ~ 20.0kHz
FR
-
± 0.5
-
dB
Note: 13. The passband and stopband frequencies scale with fs (system sampling rate).
ex.) PB=0.4535×fs (@±0.05dB), SB=0.546×fs.
Note: 14. The calculating delay time which occurred by digital filtering. This time is from setting the 16/18bit data of
both channels to input register to the output of analog signal.
ANALOG CHARACTERISTICS (VIDEO)
(Ta = 25°C; VP=12V, VD = 5V; VVD1=VVD2 = 5V; VVOL1/0= “00” unless specified.)
Parameter
Conditions
min
typ
max
Units
Sync tip clamp
voltage at output
Chrominance bias
voltage at output
Gain
0.7
V
2.2
V
Input=0.3Vp-p, 100kHz
Input=0.3Vp-p, 100kHz
5.5
5.5
6.7
7.7
8.6
-0.3
6
6
6.5
6.5
7.7
8.7
9.6
0.3
dB
dB
dB
dB
dB
dB
RGB Gain
VVOL1/0= “00”
VVOL1/0= “01”
VVOL1/0= “10”
VVOL1/0= “11”
7.2
8.2
9.1
-
Interchannel Gain
Mismatch
Input=0.3Vp-p, 100kHz (Note: 15)
Frequency response Input=0.3Vp-p, Response at 6MHz
-1
40
-
-0.5
60
-
dB
kohm
Vpp
Input impedance
Input Signal
Chrominance input (internally biased)
f=100kHz, maximum with distortion < 1.0%,
gain=6dB.
-
1.5
Load Resistance
Load Capacitance
Except RFV pin (Note: 16)
RFV pin (Note: 17)
C1 (Note: 16)
150
20k
-
-
-
-
ohm
ohm
pF
400
15
C2 (Note: 16, Note: 17)
pF
Dynamic Output
Signal
Y/C Cross talk
f=100kHz, maximum with distortion < 1.0%
-
-
-
-50
74
-
3
Vpp
f=4.43MHz, 1Vp-p input. Among TVVOUT,
TVRC, VCRVOUT and VCRC outputs.
Reference Level = 0.7Vp-p, CCIR 567 weighting.
BW= 15kHz to 5MHz.
0.7Vpp 5steps modulated staircase.
chrominance &burst are 280mVpp, 4.43MHz.
0.7Vpp 5steps modulated staircase.
-
dB
S/N
-
-
dB
Differential Gain
Differential Phase
-3
-3
3
3
%
-
Degree
chrominance &burst are 280mVpp, 4.43MHz.
MS0187-E-00
2002/11
- 11 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
