AD9957: maximum signal bandwidth

Document created by analog-archivist Employee on Feb 23, 2016Last modified by analog-archivist Employee on Feb 23, 2016
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In AD9957's datasheet, as figure 1 shown, the AD9957 output signal's bandwidth
is about 10MHz. I want to know what the maximum signal bandwidth of AD9957 can
process is.

 

The maximum signal bandwidth is ~62MHz.
Given a 1GHz system clock, the AD9957's maximum vector(IQ) rate is 125MSPS.
Note, we recommend that the user up sample their baseband signal by a minimum
2x.
This is to avoid excessive roll-off of the 1st half band's frequency response.
I have seen applications around 56MHz.

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