Maxim MAX19994A双路RF下变换方案

Maxim公司的 MAX19994A是双路RF下变换器,RF范围从1200MHz到2000MHz,LO范围从1450MHz 到 2050MHz,IF范围从50MHz到500MHz,典型的转换增益为8.4dB,典型的噪音为9.8dB,输入IP3典型值为+25dBm,输入1dB压缩点为+14dBm,单电源5.0V 或3.3V工作,主要用在WCDMA/LTE,TD-SCDMA,GSM/EDGE和cdma2000M 无线基站,无线本地回路(WLL),固定宽带无线接入,私人移动电台和军用系统.本文介绍MAX19994A主要特性,功能方框图,以及典型应用电路图和所用元件表.

The MAX19994A dual-channel downconverter is designed to provide 8.4dB of conversion gain, +25dBm input IP3, +14dBm 1dB input compression point, and a noise figure of 9.8dB for 1200MHz to 2000MHz diversity receiver applications. With an optimized LO frequency range of 1450MHz to 2050MHz, this mixer supports both high- and low-side LO injection architectures for the 1200MHz to 1700MHz and 1700MHz to 2000MHz RF bands, respectively.
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