LM1203 RGB Video Amplifier System – Datasheet

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The LM1203 is a wideband video amplifier system intender for high-resolution RGB color monitor applications. In addition to three matched video amplifiers, the LM1203 contains three gated differential input black level clamp comparators for brightness control and three matched attenuator circuits for contrast control. Each video amplifier contains again set or ‘‘Drive’’ node for setting maximum system gain as well as providing trim capability. The LM1203 also contains a voltage reference for the video inputs.

LM1203 Pinout

LM1203 Pin Configuration

Pin NoPin NameDescription
1VCC 1Voltage Supply Pin 1
2CONTRAST CAP Contrast Cap Pin
3 CONTRAST CAP Contrast Cap Pin
4R VIDEO IN R Video Input Pin
5R CLAMP CAP R Clamp Cap Pin
6G VIDEO ING Video Input Pin
7GNDGround Pin
8 G CLAMP CAP G Clamp Cap Pin
9B VIDEO IN B Video Input Pin
10B CLAMP CAP B Clamp Cap Pin
11VREFReference Voltage Pin
12CONTRASTContrast Pin
13 VCC 1 Voltage Supply Pin 1
14CLAMP GATEClamp Gate Pin
15B CLAMP +B Clamp Positive Pin
16B VIDEO OUT B Video-Output Pin
17 B CLAMP – B Clamp Negative Pin
18B DRIVEB Drive Pin
19 G CLAMP + G Clamp Positive Pin
20 G VIDEO OUT G Video Output Pin
21 G CLAMP – G Clamp Negative Pin
22G DRIVEG Drive Pin
23 VCC 2 Voltage Supply Pin 2
24 R CLAMP + R Clamp Positive Pin
25 R VIDEO OUT R Video Output Pin
26 R CLAMP – R Clamp Negative Pin
27R DRIVE R Drive Pin
28 VCC 2 Voltage Supply Pin 2

LM1203 Features

  • Three wideband video amplifiers
  • Inherently matched attenuators for contrast control
  • Three externally gated comparators for brightness control
  • Provisions for independent gain control (Drive) of each video amplifier
  • Video input voltage reference
  • Low impedance output driver

Application

  • CRT video amplifiers
  • Video switches
  • High frequency video pre amplifiers
  • Wideband gain controls
  • PC monitors
  • Workstation

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