General Description

The MAX2116/MAX2118 family of low-cost direct conversion tuner ICs are designed for use in digital direct broadcast satellite (DBS) television applications, professional VSAT systems, and two-way Internet through satellite applications. These devices set the standard for integration and performance, significantly reducing the required RF know-how for design implementation. Uniquely architected, the MAX2116/MAX2118 simplify direct main board and tuner module designs.

The MAX2116/MAX2118 devices directly convert L band signals to baseband using a broadband I/Q downconverter. The operating frequency range extends from 850MHz to 2175MHz.

Each IC includes an LNA with gain control, I and Q downconverting mixers, and baseband lowpass filters gain and cutoff frequency control. Together, the RF and baseband variable gain amplifiers provide more than 79dB of gain control range.

特性 Features

? Fully Integrated VCOs

? Supports 1Mbaud to 45Mbaud, 850MHz to

?? 2175MHz Operation

? 4MHz to 33MHz Tunable LP Filters

? Complete Synthesizer with I2C Interface

? Analog RF VGA and Digital Baseband VGA

? Multiple I2C Addresses for Multituner

?? Applications

? Single-Ended (MAX2116) and Differential

?? (MAX2118) I/Q Interface

??

Applications

?? DVB

?? DSS (U.S.)

?? VSAT

?? Internet Through Satellite