LNBS21集成电路（IC）的专用规格书PDF中文资料

LNBS21属于集成电路（IC）的专用。由意法半导体集团制造生产的LNBS21专用该系列产品可提供所需的功能，用以将信息源/信宿连到各种复杂或范围狭窄应用中的传感器、变送器、致动器、传输介质或其他此类端点。例如，汽车安全气囊驱动器、车身控制和信息娱乐总线、自适应电缆均衡器、智能卡等等。

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