[原创] Linear LTC6432-15 100kHz-1．4GHz差分ADC驱动方案

Linear公司的LTC6432-15是100kHz-1.4GHz的差分ADC驱动器/IF放大器,1MHz时100欧姆差分负载OIP3为54.4dBm,而150MHz时100欧姆差分负载OIP3为48.0dBm,输出功率高达15dBm,240MHz时的NF为3.0dB,单电源5V工作,主要用差分1GHz带宽ADC驱动器,宽带测试仪表放大器,差分IF放大器和50Ω/75Ω平衡IF放大器.本文介绍了LTC6432 -15主要特性,框图,应用电路,以及演示板DC2496A-A/B电路图,材料清单和PCB设计文件.

The LTCR6432-15 is an ultra-high dynamic range differentialgain block amplifier designed to drive high resolution,high speed ADCs. It offers a full GHz of data bandwidth forcomplex spectrally efficient modulations schemes or whereresistance to blockers is critical. This unique device cansimultaneously achieve low noise, incomparable linearity and flat gain over the 100kHz to 1GHz band.

Unlike wideband GaAs PHEMTs, MESFETs and GaN FETs,this SiGe based amplifier exhibits low 1/f noise and canbe used down to 100kHz.

The LTC6432-15 is designed for ease of use requiring aminimum of support components. Impedance matching,temperature compensation and bias control are handledinternally to ensure consistent performance over environmentalchanges.
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