HMC7043 & HMC7044: Maximum frequency while using delay

Hi y_suzuki,

You are right. Fundamentally, HMC7044 and HMC7043 have the same output distribution structure. However, I would like to point out that they are not the same die.

Both chips underwent an individual characterization process. The limits for the characterization were specified as 1600MHz at the time of their release. Therefore, HMC7044 and HMC7043 were characterized using the limits of 1600MHz maximum frequency with delay.  After that, with the customer feedback, ADI recharacterized the HMC7044 and released the Rev A datasheet. The limits were updated. 

The design of the HMC7043 output channels also supports 3200MHz maximum frequency with delay. However, it is not characterized up to these limits. So, we can not guarantee coverage for said frequencies. 

Thanks for pointing out this situation. I’ll bring this topic to the attention of the design evaluation team for consideration. 

Thanks,

Emrecan

Hello Emrecan,

Appreciate your support.
So, is it safe to assume that in the future, after HMC7043 is re-evaluated, the specification of output frequency with delay may be revised to 3200 MHz?

Best regards,

y_suzuki

Hi y_suzuki,

Yes, there is a high chance that this spec for HMC7043 will be revised to 300MHz once the part is re-evaluated.  

However, at this point, we cannot guarantee this 3200MHz spec until the re-evaluation results are in. 

Thanks,
Emrecan