Is AD9253 a buffered ADC? Our IF frequency is from 120 to 160MHz, and does the ADC have same frequency response over this 40 MHz band?
Or should we do some equalisation?
The AD9253 is an un-buffered ADC. The ADC front end has a bandwidth of 650MHz so your IF should be Ok. Please refer to the datasheet table 2 for performance numbers up to 200MHz IF. Hope this helps answer your question.
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