參數資料
型號： AK4708EQ
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： AV SCART Switch with Two RGB Outputs
中文描述： 影音SCART開關與兩個RGB輸出
文件頁數： 13/46頁
文件大小： 504K
代理商： AK4708EQ
[AK4708]
MS0618-E-00
2007/04
- 13 -
ANALOG CHARACTERISTICS (VIDEO)
(Ta = 25
°
C; VP = 12V, VD= 5V; VVD1 = VVD2 = 5V; unless otherwise specified.)
Parameter
Sync Tip Clamp Voltage
at output pin.
R/G/B Clamp Voltage
at output pin.
Pb/Pr Clamp Voltage
at output pin.
Chrominance Bias Voltage
at output pin.
Gain
Input = 0.3Vp-p, 100kHz
Interchannel Gain Mismatch1
TVRC, TVG, TVB. Input = 0.3Vp-p, 100kHz.
VCRC, VCRGO, VCRBO.
Input = 0.3Vp-p, 100kHz.
Frequency Response
Input=0.3Vp-p, C1=C2=0pF. 100kHz to 6MHz.
at 10MHz.
at 27MHz.
Group Delay Distortion
At 4.43MHz with respect to 1MHz.
Input Impedance
Chrominance input (internally biased)
Input Signal
f = 100kHz, maximum with distortion < 1.0%,
gain = 6dB.
Load Resistance
(Figure 1)
Load Capacitance
C1 (Figure 1)
C2 (Figure 1)
Dynamic Output Signal
f = 100kHz, maximum with distortion < 1.0%
Y/C Crosstalk
f = 4.43MHz, 1Vp-p input. Among TVVOUT,
TVRC and VCRVOUT outputs.
S/N
Reference Level = 0.7Vp-p, CCIR 567 weighting.
BW = 15kHz to 5MHz.
Differential Gain
0.7Vpp 5steps modulated staircase.
chrominance &burst are 280mVpp, 4.43MHz.
Differential Phase
0.7Vpp 5steps modulated staircase.
chrominance &burst are 280mVpp, 4.43MHz.
Conditions
min
typ
0.7
0.7
2.2
2.2
6
-
max
6.5
0.5
Units
V
V
V
V
dB
dB
5.5
-0.5
Interchannel Gain Mismatch2
-0.5
-
0.5
dB
-1.0
-3
-40
60
0.5
-25
15
-
dB
dB
dB
ns
k
Ω
40
-
-
1.5
Vpp
150
-
-
-
-
Ω
pF
pF
Vpp
400
15
3
-
50
-
dB
-
74
-
dB
-
0.6
-
%
-
0.8
-
Degree
Video Signal Output
75 ohm
75 ohm
max: 400pF
C1
R1
R2
max: 15pF
C2
Figure 1. Load Resistance R1+R2 and Load Capacitance C1/C2.
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