LTC5583设计的双路6GHz RMS功率检测技术

本文介绍了LTC5583主要特性,方框图, 单端输入配置和差分输入配置测试电路图以及单端输入配置图和差分输入配置图.
Linear公司的LTC5583是匹配的双路6GHz RMS功率检测器,能测量两路AC信号,动态范围从-59dBm 到4dBm,频率范围从40MHz 到6GHz,整个温度范围精度为±0.5dB,两路的匹配输出小于1.25dB,快速响应时间,上升时间140ns,主要用在VSWR监视器,MIMO发送功率控制,基站功率放大器控制,发送和接收增益控制以及RF仪表.

LTC5583主要特性:

Frequency Range: 40MHz to 6GHz

Linear Dynamic Range: Up to 60dB

±0.5dB (Typ) Accuracy Over Temperature

40dB Channel-to-Channel Isolation at 2GHz Even with Single-Ended RF Inputs

Matched Dual-Channel Outputs: 1.25dB (Typ)

Single-Ended RF Inputs—No Transformer Required

Accurate RMS Power Measurement of High Crest

Factor Modulated Waveforms

Difference Output Provides VSWR Measurement

Fast Envelope Detector Outputs

Fast Response Time: 140ns Rise Time

Small 4mm 4mm QFN24 Package

LTC5583应用:

VSWR Monitor

MIMO Transmit Power Control

Basestation PA Control

Transmit and Receive Gain Control

RF Instrumentation

图1.LTC5583方框图

图2.LTC5583测试电路图:40MHz-3GHz,单端输入配置

图3.LTC5583测试电路图:2GHz-6GHz,差分输入配置

图4.LTC5583单端输入配置图

图5.LTC5583差分输入配置图

图6.LTC5583评估板单端输入配置PCB布局图(顶层)