Mr.K

ADL5382: frequency response

Discussion created by Mr.K on Mar 29, 2016

Hello,

 

I am evaluating the characteristic by using the evaluation board of Figure 60 in the ADL5382 datasheet.

I will use the device by the bandwidth from 10KHz to 40MHz.

 

To confirm the frequency response, I removed the transformer of T2 and T3 from the board.

Because the transformer doesn't support the frequency response.

 

Under such a condition, I evaluated the frequency response.

I expected a flat characteristic from DC to 40MHz.

But, when the signal of 0.5MHz was input, the output of Q signal attenuated 1.7dB.

 

In this board, why does a low frequency band attenuate?

 

Best Regards,

Mr.K

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