ZLNB1001

更新时间： 2024-11-18 07:44:35

品牌	Logo	应用领域
美台 - DIODES		控制器
页数	文件大小	规格书
4页	139K
描述
DBS tone and polarity multiplex controller

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ZLNB1001 数据手册

ZLNB1001

DBS tone and polarity multiplex controller

Description

The ZLNB1001 multiplex controller is one of a wide range of satellite

receiver LNB and IF distribution support circuits available from Zetex.

It supports a single IF path providing logic outputs to select one of four

IF switch input channels, which typically using PIN diodes. It is

intended for use in multi-switch applications for selection and

distribution of universal LNB IF output signals, replacing many discrete

components including the voltage regulator to save both

manufacturing cost and PCB size whilst improving reliability.

The highly accurate control input of the ZLNB1001 has both voltage and tone control for the four

required states. The voltage threshold is nominally 14.5 V and to meet the demanding

requirements of some broadcasters it has a switching range of 14.0 V to 15 V. The threshold is

temperature compensated to minimize drift. This features a low and stable input current that

enables transient protection to be achieved with the addition of only a single resistor.

The outputs are configured to deliver a positive regulated voltage drive of 7 V when a desired

channel is selected, and 0V when de-selected.

Features

■ Precision voltage and tone detectors

■ Temperature compensated

■ Low cost solution

■ Integrated tone filter

■ Powered from STB: no additional power requirement

■ Direct drive to PIN diodes

■ SO8 SMD package

Pin out - top view

Applications

VIN

VPOL

FIN

VOUT4

VOUT3

VOUT2

VOUT1

■ Switch boxes for satellite IF distribution

■ LNB receivers

GND

Issue 1 - September 2005

www.zetex.com

12 3 4

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