ISL28291 replacement

Hi Roy,

Can you give us a little more information on what specs are most important in the ISL28291 for the customer? For example, do they need the full 61MHz bandwidth or the 635uV offset specs? What about the THD+N specs?

Or do they need a direct cross?

Any additional information you can share will help us provide the best part recommendation.

Thank you,

Tim Claycomb

Hi Tim,

>50MHz bandwidth and direct cross are needed.

For THD+N, I need to check with customer, but I think we could purpose our similar part first.

Roy 

Hi Roy,

Thank you for the additional information. I will move this to the high speed team (>50MHz).

Thank you,

Tim Claycomb

Well Roy, 

Those are pretty good parts, it is really the input noise that is hard to cross - can the customer relax the noise specs - a schematic would help. Here is what the parametric cross tool shows, the opa2625 looks kind of close,