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.

 In transmit operation, when RF inputs are connected to a termination pin (TERM-CHA or TERM-CHB), the switch provides low insertion loss of 0.45 dB and handles long-term evolution (LTE) average power (9 dB peak to average ratio (PAR)) of 43 dBm for full lifetime operation.

The ADRF5515 is pin-compatible with the ADRF5545A, 10 W version, which operates from 2.4 GHz to 4.2 GHz.

The ADRF5515 does not require any matching components at the RF ports that are internally matched to 50 Ω. The ANT and TERM ports are also internally ac-coupled. Therefore, only receiver ports require external dc blocking capacitors.

The device comes in an RoHS compliant, compact, 6 mm × 6 mm, 40-lead LFCSP.

ADRF5515主要特性:

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