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[原创] TI AFE7444RADAR和无线5G测试器时钟参考设计TIDA-010131

关键词:无线通信 RADAR 无线5G测试器 AFE7444

时间:2019-03-12 10:39:09       来源:中电网

TI公司的AFE7444是基于14位9GSPS DAC和14位3GSPS ADC的四路宽带RF取样模拟前端(AFE),工作频率RF高达6GHz.该器件能直接在C波段进行RF取样而不需要另外的频率转换级.四路14位9GSPS DAC信号带宽高达800MHz,四路14位3GSPS ADC信号带宽高达800MHz,NSD为–151 dBFS/Hz,在fIN = 2.6 GHz的AC性能为–3 dBFS,ANR为55 dBFS,SFDR为73 dBc HD2和HD3.AFE7444的9 GSPS时的DAC功耗为1.7W/路,3GSPS时的ADC功耗为1.8W/路,主要用在案通信设备和测试器以及矿带数字化仪和波形发生器.本文介绍了AFE7444主要特性,功能框图,以及RADAR和无线5G测试器多路RF收发器时钟参考设计TIDA-010131主要特性,RADAR RF前端子系统框图和主要技术指标,参考设计TIDA-010131框图,多路时钟板框图,多个测量测试建立图,时钟板电路图,FMC+ TO FMC+适配板电路图和参考设计TIDA-010131材料清单.

The AFE7444 is a quad-channel, wideband, RFsamplinganalog front end (AFE) based on 14-bit, 9-GSPS DACs and 14-bit, 3-GSPS ADCs. Withoperation at an RF of up to 6 GHz, this deviceenables direct RF sampling into the C-bandfrequency range without the need for additionalfrequency conversions stages. This improvement indensity and flexibility enables high-channel-count,multimission systems.

The DAC signal paths support interpolation anddigital up conversion options that deliver up to 800MHz of signal bandwidth. The differential output pathincludes a digital step attenuator (DSA), whichenables tuning of output power.Each ADC input path includes a dual DSA and RFand Digital power detectors. Flexible ..

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