官方评估板原理图问题

Question

ADI工程师，您好！ 
 我想问一下AD9154 FMC评估板上的输出部分电路中两个巴伦（ETC1-1-13和ADT2-1T-1P+）的作用：

JMMina · Accepted Answer

Hi anADuser , 
 Please see related query here: AD9144 output circuit configuration - Q&A - High-Speed DACs - EngineerZone (analog.com) . 
 RF Transformers such as T8 to T11 (ADT2-1T-1P+) convert the differential current output of each AD9154 DAC to a single ended signal driving a 50 ohm cable or load. On the other hand, T4 and T7 (ETC1-1-13) are Transmission Line transformers. They provide isolation between the output impedance of each DAC and the impedance of a cable. They are more useful when driving a long transmission line or passive filter. A choking reactance isolates the input from the output. 
 Best regards, Marco)

官方评估板原理图问题

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