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DAC38RF82: DAC 38RF82 output impedance matching

Channamallesh Hiremath
Intellectual 555 points

Part Number: DAC38RF82

Hello,

According to datasheet, DAC 38Rf82 has a 100 Ohm impedance and it is recommended to use 2:1 transformer for impedance matching. 

But, reference design DAC38RF8xEVM uses TCM3-452X-1+ transformer. This is a 3:1 transformer. 

Will there not be any impedance mismatch?

Should we use a different transformer?

Please let me know. 

Mallesh