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AD9250 Input circuit

Question asked by sin on Jun 2, 2014
Latest reply on Jun 10, 2014 by sin

Hi ,

I have some questions about AD9250.

Q1.

About figure40 of AD9250 datasheet, how much is the ratio of transformer  impedance, 1:1 or 1:2 ?

 

Q2.

At input frequencies in the second Nyquist zone and above,

is it nessesary for input circuit  to be differential double balun coupling like figure 41

in order to achieve the specification of Table 2. ?

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