Datasheet > LM1267NA

LM1267NA

更新时间： 2024-11-11 22:19:55

品牌	Logo	应用领域
美国国家半导体 - NSC		视频放大器
页数	文件大小	规格书
20页	1705K
描述
150 MHz I2C Compatible RGB Video Amplifier System with OSD and DACs

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LM1267NA 数据手册

May 2002

LM1267

150 MHz I²C Compatible RGB Video Amplifier System

with OSD and DACs

n Programmable 110 MHz to 150 MHz bandwidth

preamplifier with full video signal parametric control

General Description

The LM1267 pre-amp is an integrated CMOS CRT pre-amp.

n 4 external 8-bit DACs for bus controlled Bias and

The IC is I²C compatible, and allows control of all the pa-

Brightness

rameters necessary to directly setup and adjust the gain and

n Suitable for use with discrete or integrated clamp, with

contrast in the CRT display. Brightness and bias can be

software configurable Brightness mixer

controlled through the DAC outputs, and is well matched to

the LM2479 and LM2480 integrated bias clamp IC.

n Power Save (Green) Mode, 80% power reduction

n Matched to LM246X driver

The LM1267 pre-amp is designed to work in cooperation

with the LM246X high gain driver family.

Applications

Black level clamping of the signal is carried out directly on

n Low end 15’ and 17’ bus controlled monitors with OSD

n 1024 X 768 displays up to 85 Hz requiring OSD

capability

the AC coupled input signal into the high impedance pream-

plifier input, thus eliminating the need for additional black

level clamp capacitors.

n Very low cost system with LM246X driver

The IC is packaged in an industry standard 24-lead DIP

molded plastic package.

Features

n I²C compatible interface

Block and Connection Diagram

DS200050-1

FIGURE 1. Order Number LM1267NA

See NS Package Number N24D

DS200050

www.national.com

12 3 4 5 6 7...20

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