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关于AD5474采集前端的问题

参考《ADS5440/44/63/74 EVM UG》文档中的介绍,两级巴伦变压器的端接方式已经把特性阻抗在第一二个奈奎斯特区配置为50欧,如果把该巴伦换成普通变压器(比如,匝数比1:1  ,50欧,带宽0.1-200M)其他AD前端电路不变,阻抗是否匹配成50欧?或者需要什么改变,可以配成50欧呢