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MAX2102直接转换调谐器实用于机顶盒,作为直接广播电视卫星(DBS)数字电视信号的处理。相比于中间频率(IF)转换结构,该器件由于省去了IF混频器、IF本振、及声表面滤波器,从而使成本得以大幅度降低。 MAX2102将950MHz至2150MHz的L波段信号转换为所需要的基带信号,它内部集成了低噪声放大器,自动增益控制放大器(AGC),两个下行变换混频器,一个带有64或65分
The MAX2102 direct conversion tuner is useful in set-top boxes as a direct broadcast television satellite (DBS) digital television signal processing. Compared to the intermediate frequency (IF) conversion structure, the device due to eliminating the IF mixer, IF local oscillator, and SAW filter, so that the cost can be significantly reduced. The MAX2102 converts the 950MHz to 2150MHz L-band signal into the desired baseband signal. The MAX2102 integrates a low-noise amplifier, an automatic gain control amplifier (AGC), two down-conversion mixers and a 64- or 65-