參數(shù)資料
型號(hào)： LM1262NA
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 音頻／視頻放大
英文描述： 200 MHz I2C Compatible RGB Video Amplifier System with OSD and DACs
中文描述： 3 CHANNEL, VIDEO PREAMPLIFIER, PDIP24
封裝： PLASTIC, DIP-24
文件頁數(shù)： 9/20頁
文件大?。?/td> 1122K
代理商： LM1262NA
Pin Descriptions
(Continued)
Pin No.
5
6
7
Pin Name
Red Video In
Green Video In
Blue Video In
Schematic
Description
Video inputs. These inputs
must
be AC
coupled with a 4.7 nF cap. DC restoration is
done at these inputs. A series resistor of
about 33
and external ESD protection
diodes should also be used for ESD
protection.
8
Analog Ground
Ground Pin for the analog circuits of the
LM1262.
Power supply pin for LM1262.
Sets the internal current sources through a
10 k
1% external resistor. Resistor value
and accuracy is critical for optimum
operation of the LM1262.
9
V
CC
V
ref
R
ext
10
11
SDA
The I
2
C data line. A pull-up resistor of about
2 k
should be connected between this pin
and +5V. A 300
resistor should be
connected in series with the data line for
protection against arcing.
12
SCL
The I
2
C Clock line. A pull-up resistor of
about 2 k
should be connected between
this pin and +5V. A 300
resistor should be
connected in series with the clock line for
protection against arcing.
13
14
15
16
DAC4
DAC3
DAC2
DAC1
DAC outputs for cathode cut-off adjustments
and brightness control. DAC 4 can be set to
change the outputs of the other three DACs,
acting as the brightness control. The DACs
are set through the I
2
C bus.
17
Digital Ground
Ground Pin for the digital circuits of the
LM1262.
L
www.national.com
9
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LM1269 制造商:NSC 制造商全稱:National Semiconductor 功能描述:110 MHz I2C Compatible RGB Video Amplifier System with OSD & DACs
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