Datasheet > ELM304P

ELM304P

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
ELM		/
页数	文件大小	规格书
4页	28K
描述
NTSC Video Generator

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ELM304P 数据手册

ELM304

NTSC Video Generator

Description

Features

The ELM304 is a low-cost NTSC video signal

• Low power CMOS design - typically 1mA at 5V

• Wide supply range - 3.0 to 5.5 volt operation

• Uses a standard 3.58MHz crystal

generator in an 8 pin package. Requiring only an

external crystal and a few passive components, this

circuit produces a stable raster that is suitable for a

variety of video applications.

• Generates both solid and bar type patterns

• No external amplifier required

The ELM304 can be ‘programmed’ to generate

either a solid white raster or a four-level gray scale

pattern simply by changing the logic level at the

mode input pin. A supplied internal pullup resistor

further simplifies the circuitry when interfacing to

mechanical switches.

• Standard 1V p-p NTSC sync negative output

• Requires no adjustments

Although originally designed to provide a stable

video input signal for use while recording audio on

video cassette recorders, this circuit can also be

used for many other instructional and test purposes.

The low power consumption and small size of the

circuit also makes it ideal for battery-powered

applications.

Connection Diagram

PDIP and SOIC

(top view)

VDD

XT1

VSS

Applications

• Video Source for Video Cassette Recorders

• Classroom Instructional Aid

XT2

Mode

• Test Bench Video Generator

Block Diagram

XT1

Master

Oscillator

Pattern

Generator

Output

Matrix

XT2

VDD

Mode

ELM304DSB

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