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| 型號： | LA75505M |
| 文件頁數(shù)： | 10/13頁 |
| 文件大小： | 224K |
| 代理商： | LA75505M |
No. 6930-10/13
LA75505M
Continued from preceding page.
Pin No.
Pin
Pin Function
Internal Circuit
Pins 19 and 20 are VIF input pins.
To reduce the loss of signal through a saw filter,
input registors are set to 2 k
.
VIF amplifier has three capacitive coupling
amplifiers, direct connection from a saw filter is
available.
19
20
VIF INPUT
Continued on next page.
Connect the decoupling capacitor as close as
possible.
17
V
CC
18
GND
Internal filters (i.e. sound carrier BPF and sound
carrier trap) are tuned using the capacitor
connected to pin 21.
A value between 0.47 μF and 1 μF is considered
desirable taking video S/N, and AM and PM noise
into consideration.
21
FILTER CONTROL
CAPACITOR
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