Datasheet > GS1881_09

GS1881_09

更新时间： 2024-09-18 10:44:23

品牌	Logo	应用领域
GENNUM		/
页数	文件大小	规格书
29页	4193K
描述
Monolithic Video Sync Separators

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GS1881_09 数据手册

GS1881, GS4881, GS4981 Monolithic Video Sync Separators

Features

Description

•

noise tolerant odd/even flag, back porch and

horizontal sync pulse

The GS1881, GS4881 and GS4981 are general purpose sync

separators for use in a wide variety of video applications.

The devices extract the timing information from composite

video signals with scan rates from 15 to 130kHz.

•

fast recovery from impulse noise

excellent temperature stability

The GS1881 is a drop-in replacement for the industry

standard LM1881 with much improved performance. The

device generates composite sync, vertical sync, back porch

and odd/even field signals. The GS4881 is identical to the

GS1881 but features a noise immune back porch pulse

which maintains a constant H rate during the vertical

interval. The GS4981 is identical to the GS4881, except that

it provides horizontal sync in place of the odd/even output.

0.5V to 4Vpp input signal amplitude with 5V supply

well-controlled clamp discharge current and slicing

level

•

programmable horizontal scan rate (up to 130kHz)

composite, vertical, back porch, odd/even (GS1881,

GS4881), horizontal (GS4981) outputs

•

predictable vertical output pulse width with default

trigger for non-standard video signals

All three devices feature a self-adjusting windowing circuit

for noise immunity, which synchronizes to H rate. This

windowing circuit determines the odd or even field in the

GS1881 and GS4881, gates the back porch pulse in the

GS4881 and GS4981, and generates the horizontal sync

output in the GS4981.

•

Pb-free and Green

5V to 12V supply voltage range

pin compatible with LM1881 sync separator

Application Selection Chart

The devices feature an improved input stage which ensures

that the input signal is sliced at a predictable point due to

well-controlled input clamp discharge current and sync

slicing level. A missing pulse detector enables the devices

to recover quickly from impulse noise disturbances by

temporarily increasing the clamp discharge current by

roughly ten times. The input stage will operate with signals

from 0.5 to 4Vp-p with a 5V supply.

Application

Choose Device:

Direct LM1881 Replacement with

Improved Performance

GS1881

New Applications Substitution for

LM1881

GS4881

GS4981

New Applications Requiring Horizontal

Sync Output

The GS1881, GS4881 and GS4981 also feature a predictable

vertical output pulse width with a default trigger for

non-standard video signals. All three are available in

commercial and industrial temperature ranges and are

packaged in both DIP and SOIC.

GS1881, GS4881, GS4981 Monolithic Video Sync

Separators

Data Sheet

1 of 29

www.gennum.com

Proprietary & Confidential

6926 - 5

November 2009

12 3 4 5 6 7...29

中文翻译

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与GS1881_09相关器件

型号	品牌	获取价格	描述	数据表
GS1881-CDA	GENNUM	获取价格	Monolithic Video Sync Separators
GS1881-CKA	GENNUM	获取价格	Monolithic Video Sync Separators
GS1881CTA	ETC	获取价格	Analog IC
GS1881-CTA	GENNUM	获取价格	Monolithic Video Sync Separators
GS1881-IDA	ROCHESTER	获取价格	SYNC SEPARATOR IC, PDIP8, PLASTIC, DIP-8
GS1881-IDA	GENNUM	获取价格	Monolithic Video Sync Separators
GS1881-IKA	GENNUM	获取价格	Monolithic Video Sync Separators
GS1881-IKA	ROCHESTER	获取价格	SYNC SEPARATOR IC, PDSO8, SOIC-8
GS1881ITA	ETC	获取价格	Analog IC
GS1881-ITA	GENNUM	获取价格	Monolithic Video Sync Separators

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