參數(shù)資料
型號: LA7138M
廠商: Sanyo Electric Co.,Ltd.
英文描述: Monolithic Linear IC For the DVD Player Analog Video Signal I/F Driver
中文描述: 單片線性集成電路的DVD播放機模擬視頻信號I /女驅(qū)動
文件頁數(shù): 9/13頁
文件大小: 332K
代理商: LA7138M
LA7138M
No.A0220-9/16
Continued from preceding page.
Pin
No.
Pin name
I/O
Pin
voltage
Input/
Output
impedance
10k
Function
Equivalent circuit
6
C.IN
I
4.8V
Video signal input pin.
Enter the chroma signal for input of composite/S
signal. Enter the B-Y or R-Y signal for input of
the component signal input.
For input of the base band signal, enter any of
RGB signals that have a sync signal.
8
REG
O
8V
1.5k
Pin for the regulator that generates an 8V
supply voltage in IC.
To use the supply voltage of 12V, connect a
collector of the external PNP transistor (see the
test circuit A). Since the noise in IC is
dependent on the stability of regulator, it is
recommended to connect a 470
μ
F capacitor
when the S/N ratio of –80dB is to be secured for
controls other than Y/C-MIX.
To secure the S/N ratio of –74dB for Y/C-MIX,
set the supply voltage to 8V (VCCB) and apply
8V also to this pin. (See the test circuit B.)
10
Y.IN
I
4.2V
Clamp form Video signal input pin.
Enter the Y signal for input of composite/S and
component signal. For input of the base band
signal, enter any of RGB signals that have a
sync signal.
11
AMP.SW
I
2.4V
9.0G
Control pin to select the AMP gain according to
the input signal amplitude.
Control is possible with a microcontroller that
operates on 3.3 to 5.0V power supply as well as
through selection of VCC/GND on a substrate.
12
PNP-B-IN
O
3.4V
4.0G
Base input pin of the external PNP transistor for
the 8V regulator.
Connect to the transistor in case of the supply
voltage of 12V (see the test circuit A).
To use the supply voltage of 8V, keep this pin
open (see the test circuit B).
Continued on next page.
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