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High-Speed ADCs

Q&A AD9484 CMRR Specification

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eti_ch on Aug 7, 2018

Hello,

Are there any specifications for the CMRR vs. frequency for the AD9484 500MSps, 8 Bit ADC?

I could only find the specified CM Input Voltage of 1.7V but no information about the impact of slight variations of this voltage on the digital output word.

Thanks in advance and regards

0 David.Buchanan

on Aug 10, 2018 9:55 PM
Hi,

Unfortunately, there is no CMRR data available for the AD9484, but I am not aware of any concerns about it's performance with respect to CMRR. The device has integrated bias for the analog inputs, if your signal can be ac coupled then I would recommend using the onboard bias.

Regards,

David
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