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參數資料
| 型號： | LA7138M |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO24 |
| 封裝： | 0.300 INCH, MFP-24 |
| 文件頁數： | 2/13頁 |
| 文件大?。?/td> | 320K |
| 代理商： | LA7138M |
LA7138M
No.A0220-10/16
Continued from preceding page.
Pin
No.
Pin name
I/O
Pin
voltage
Input/
Output
impedance
Function
Equivalent circuit
13
Y.OUT1
O
2.7V
11.6
15
Y.OUT2
O
2.7V
11.6
Video signal output pin.
Drives the video signal entered in pin 10 by
75
. Mute possible with pin 1.
17
C.OUT1
O
3.9V
11.6
19
C.OUT2
O
3.9V
11.6
Video signal output pin.
Drives the video signal entered in pin 6 by 75
.
Mute possible with pin 1.
21
COMP.OUT1
O
3.57V
11.6
23
COMP.OUT2
O
3.57V
11.6
Video signal output pin.
Drives the video signal entered in pin 3 by 75
.
Mute possible with pin 1.
16
C-DC.OUT
O
4.7V
4.1
S1/S2 DC voltage output pin.
Outputs 0V for the 4: 3 mode, 2.2V for the
Letter-Box mode, and 5V for the squeeze
mode.
Connect with a 10k
resistor after capacitive
coupling of chroma signal output.
9
VCC1
P
12V
OR
8.0V
VCC for a signal processing circuit.
To use the supply voltage of 12V, connect an
emitter of external PNP transistor (see the test
circuit A). Insert a capacitor of around 47
F
between this VCC and pin 7.
20
VCC2
P
8V
VCC for the 75 drive circuit.
Insert a capacitor of around 47
F between this
VCC and GND of the 75 drive circuit.
Pay due attention to the layout because the
output signal has a substantial amplitude.
7
GND1
P
0V
GND for the signal processing circuit.
14
GND2
P
0V
GND of the 75
drive circuit (pins 13 and 15).
Pay due attention on the layout because the
output signal has a substantial amplitude.
18
GND2B
P
0V
GND of the 75
drive circuit (pins 17 and 19).
Pay due attention to the layout because the
output signal has a substantial amplitude.
24
GND2A
P
0V
GND of the 75
drive circuit (pins 21 and 23).
Pay due attention on the layout because the
output signal has a substantial amplitude.
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