官方评估板原理图问题

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

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

Hi JMMina,

Thanks for your clarification!