DESCRIPTION

Intended for analog and digital satellite STB receivers/SatTV, sets/PC cards, the LNBS21 is a monolithic voltage regulator and interface IC, assembled in PowerSO-20, specifically designed to provide the power and the 13/18V, 22KHz tone signalling to the LNB downconverter in the antenna or to the multiswitch box. In this application field, it offers a complete solution with extremely low component count, low power dissipation together with simple design and I2CTM standard interfacing.

■ COMPLETE INTERFACE BETWEEN LNB

AND I2C? BUS

■ BUILT-IN DC/DC CONTROLLER FOR

SINGLE 12V SUPPLY OPERATION

■ ACCURATE BUILT-IN 22KHz TONE

OSCILLATOR

■ SUITS WIDELY ACCEPTED STANDARDS

■ FAST OSCILLATOR START-UP FACILITATES

DiSEqC? ENCODING

■ BUILT-IN 22KHz TONE DETECTOR

SUPPORTS BI-DIRECTIONAL DiSEqC?

■ LOOP-THROUGH FUNCTION FOR SLAVE

OPERATION

■ LNB SHORT CIRCUIT PROTECTION AND

DIAGNOSTIC

■ CABLE LENGTH DIGITAL COMPENSATION

■ INTERNAL OVER TEMPERATURE

PROTECTION

LNBS21PD屬于集成電路（IC） > 專用。意法半導體（ST）集團制造生產(chǎn)的LNBS21PD專用該系列產(chǎn)品可提供所需的功能，用以將信息源/信宿連到各種復雜或范圍狹窄應(yīng)用中的傳感器、變送器、致動器、傳輸介質(zhì)或其他此類端點。例如，汽車安全氣囊驅(qū)動器、車身控制和信息娛樂總線、自適應(yīng)電纜均衡器、智能卡等等。