第第頁(yè)基于BLF888設(shè)計(jì)的500WRF廣播發(fā)射方案NXP公司的BLF888是500WLDMOSRF功率晶體管，用于廣播發(fā)射和工業(yè)應(yīng)用。在UHF頻帶470MHz到860MHz可提供平均功率110W，峰值包絡(luò)功率500W，功率增益19dB，漏極效率46%，VDS電壓50V，漏極靜態(tài)電流1.3A。本文主要介紹了BLF888主要特性和優(yōu)勢(shì)，AB類共源寬帶放大器電路和元件列表以及PCB布局圖和元件布局圖。

A500WLDMOSRFpowertransistorforbroadcasttransmitterapplicationsandindustrialapplications.Thetransistorisoptimizedfordigitalapplicationsandcandeliver110WaverageDVB-TbroadbandoverthefullUHFbandfrom470MHzto860MHz.Theexcellentruggednessofthisdevicemakesitidealfordigitaltransmitterapplications.

BLF888主要特性和優(yōu)勢(shì)：

2-Toneperformanceat860MHz,adrain-sourcevoltageVDSof50VandaquiescentdraincurrentIDq=1.3A:

Peakenvelopepowerloadpower=500W

Powergain=19dB

Drainefficiency=46%

Thirdorderintermodulationdistortion=32dBc

DVBperformanceat858MHz,adrain-sourcevoltageVDSof50VandaquiescentdraincurrentIDq=1.3A:

Averageoutputpower=110W

Powergain=19dB

Drainefficiency=31%

Shoulderdistance=31dBc(4.3MHzfromcenterfrequency)

IntegratedESDprotection

Advancedflangematerialforoptimumthermalbehaviorandreliability

Excellentruggedness

Highpowergain

Highefficiency

Designedforbroadbandoperation(470MHzto860MHz)

Excellentreliability

Internalinputmatchingforhighgainandoptimumbroadbandoperation

Easypowercontrol

ComplianttoDirective2023/95/EC,regardingRestrictionofHazardousSubstances(RoHS)

BLF888應(yīng)用：

CommunicationtransmitterapplicationsintheUHFband

IndustrialapplicationsintheUHFband