[原创]ADI ADRF5515双通道3．4－3．8 GHz 20 W接收器前端解决方案

ADI公司的ADRF5515是集成式双通道3.4-3.8 GHz 20 W接收器前端,具有2 级低噪音放大器(LNA)和高功率硅单刀双掷(SPDT)开关,片内偏置和匹配,单电源供电,3.6 GHz时高增益模式的增益为33 dB,噪音为1.0dB;低增益模式的增益为16 dB,噪音为1.0dB.插入损耗在3.6 GHz 时为 0.45 dB.OIP3为32 dBm.6 mm × 6 mm 40 引脚 LFCSP 封装.主要用在无线基础设备,TDD大规模MIMO(massivemultiple-input multiple-output)和有源天线系统以及基于TDD的通信系统.本文介绍了ADRF5515主要特性,功能框图,主要电指标,评估板ADRF5515-EVALZ主要特性,电路图,材料清单和PCB装配图.

 The ADRF5515 is a dual-channel, integrated RF, front-end, multichip module designed for time division duplexing (TDD) applications. The device operates from 3.3 GHz to 4.0 GHz. The ADRF5515 is configured in dual channels with a cascading, two-stage, LNA and a high power silicon SPDT switch.

In high gain mode, the cascaded two-stage LNA and switch offer a low noise figure of 1.0 dB and a high gain of 33 dB at 3.6 GHz with an output third-order intercept point (OIP3) of 32 dBm (typical). In low gain mode, one stage of the two-stage LNA is in bypass, providing 16 dB of gain at a lower current of 36 mA. In power-down mode, the LNAs are turned off and the device draws 12 mA.

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