Datasheet > LM1276

LM1276

更新时间： 2024-11-12 04:19:19

品牌	Logo	应用领域
美国国家半导体 - NSC		放大器
页数	文件大小	规格书
50页	2619K
描述
150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LM1276 数据手册

May 2005

LM1276

150 MHz I²C Compatible RGB Preamplifier with Internal

512 Character OSD ROM, 512 Character RAM and 4

DACs

n Enhanced I²C compatible microcontroller interface to

allow versatile Page RAM access.

n OSD Window Fade In/Fade Out.

n OSD Variable Tone Transparency.

General Description

The LM1276 pre-amp is an integrated CMOS CRT preamp

with an integrated Hi-Brite Window generator, 512 Character

OSD generator, and an auto size measurement circuit. It has

n 3 Bit OSD Contrast.

an I²C compatible interface, which allows control of all the

n Video Data detection for Auto Centering & Sizing.

n 2 Bit Adjustable Burn-in screen Mode with no video

input.

n 4 DAC outputs (8-bit resolution) for bus controlled CRT

bias and brightness.

parameters necessary to directly setup and adjust the gain

and contrast in the CRT display. Brightness and bias can be

controlled through the DAC outputs, which are well matched

to the LM2479 and LM2480 integrated bias clamp ICs. The

LM1276 preamp is also designed to be compatible with the

LM247x high gain driver family.

n Spot killer, which blanks the video outputs when V_CC

falls below the specified threshold.

Black level clamping of the video signal is carried out directly

on the AC coupled input signal into the high impedance

preamplifier input, thus eliminating the need for additional

clamp capacitors. Horizontal and vertical blanking of the

outputs is provided. Vertical blanking is optional and its

duration is register programmable.

n Suitable for use with discrete or integrated clamp, with

software configurable brightness mixer.

n Programmable ABL Onset for Multi-Limit Applications.

n 4-Bit Programmable start position for internal Horizontal

Blanking.

The IC is packaged in an industry standard 28-lead narrow

DIP molded plastic package.

n Horizontal blanking and OSD synchronization directly

from deflection signals. The blanking can be disabled, if

desired.

n Vertical blanking and OSD synchronization directly from

sync signals. The blanking width is register

programmable and can be disabled, if desired.

n Power Saving Mode with 65% power reduction.

n Matched to LM246x, LM247x drivers, and LM2479/80

bias IC’s.

Features

n Integrated Hi-Brite Window Generator operation

independent of the Microcontroller.

n Programmable Video Emphasis Control.

n 8 Programmable Hi-Brite Windows.

n Hi-Brite Enhancement on full screen, window only, or

outside of windows.

Applications

n Fully addressable 512 Character OSD.

n Internal 512 character OSD ROM usable as either (a)

384 2-color plus 128 4-color characters, (b) 640 2-color

characters, or (c) some combination in between.

n Internal 512 character RAM.

n Ideal preamplifier IC for total Hi-Brite Solution.

n 17" and 19” bus controlled monitors with OSD.

n Low cost systems with LM247x drivers.

DS200969

www.national.com

12 3 4 5 6 7...50

中文翻译

下载PDF

与LM1276相关器件

型号	品牌	获取价格	描述	数据表
LM1276AAA	NSC	获取价格	150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character
LM1279	NSC	获取价格	110 MHz RGB Video Amplifier System with OSD
LM1279A	TI	获取价格	LM1279A 110 MHz RGB Video Amplifier System with OSD
LM1279AN	ETC	获取价格	Triple Video Amplifier
LM1279AN/NOPB	TI	获取价格	3 CHANNEL, VIDEO AMPLIFIER, PDIP20
LM1279N	NSC	获取价格	110 MHz RGB Video Amplifier System with OSD
LM1279N/NOPB	TI	获取价格	1 CHANNEL, VIDEO AMPLIFIER, PDIP20, DIP-20
LM1281	NSC	获取价格	85 MHz RGB Video Amplifier System with On Screen Display (OSD)
LM1281N	NSC	获取价格	85 MHz RGB Video Amplifier System with On Screen Display (OSD)
LM1282	NSC	获取价格	110 MHz RGB Video Amplifier System with On Screen Display (OSD)

与LM1276相关文章

国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

23
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

8
AMD宣布全球裁员约1000人，调整战略聚焦增长
2024-11-14

8
英伟达新AI芯片Rubin或提前半年亮相
2024-11-05

32

产品中心

服务支持

精选活动

关于我们

帮助中心

LM1276

LM1276 数据手册

与LM1276相关器件

与LM1276相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LM1276

LM1276 数据手册

与LM1276相关器件

与LM1276相关文章

您还可以找

您在本页遇到什么问题？