MITSUMI

RGB Video Amplifier with OSD Input MM1381, 1382, 1383

RGB Video Amplifier with OSD Input

Monolithic IC MM1381, 1382, 1383

Outline

MM1381XD, MM1382XD and MM1383XD are wideband RGB video amplifiers with OSD input, developed for

use in monitors. The main differences between them are video amp bandwidth and output rise time, and

output fall time.

Features

1. Built-in wideband video amp

110MHz

2. OSD input has TTL interface

bandwidth 50MHz

3. Output voltage less than 0.1V for blanking

4. High-speed switching between VIDEO/OSD

5. Each channel has an independent drive pin for color balance adjustment

6. Built-in high impedance DC contrast control, 0~4V (> 40dB range)

7. Built-in high impedance DC drive control, 0~4V (±3dB range)

8. Built-in high impedance DC OSD contrast control, 0~4V (> 40dB range)

10Output can drive hybrid or discrete CRT drivers directly

Package

DIP-28C (MM1381XD, MM1382XD, MM1383XD)

Applications

1. High resolution RGB CRT monitors with OSD function

2. AGC amps for video

3. Gain and DC offset control

4. LCD or CCD system interface amp

Model

MM1381

MM1382

MM1383

Video amp band

85MHz

110MHz

140MHz

Output rise time

3.5nS

3.0nS

2.3nS

Output fall time

4.5nS

4.0nS

3.3nS

MM1382XD is described here as the representative model.

MM1382 is a wideband video amp system with OSD input, developed for use in high resolution RGB

monitors. MM1382 has three matched video amps with a blanking function. All DC control input is high

impedance, and the operating range is set for easy interface with serial bus control systems, at 0~4V. The

OSD section has three TTL inputs and DC contrast control. OSD signals have TTL input interface, and these

signals are made internally so that OSD input low level and video black level are the same. OSD display color

balance follows video signal color balance control adjustment. In addition, MM1382 has a built-in spot-killer

circuit that protects the CRT when monitor power is turned off.