OPA1633: Data sheet

Hello Matthew,

I have reached out to our designer to discuss.  They were out of office today.

I will provide an update to you next week.

Best,

Alec

Thank you. i look forward to their response. 

The customer is asking for a concept schematic, showing the front-end?  Most opamps that I’ve come across have a higher diff impedance than single-ended (the other way around).  So, I’m just trying to wrap my head around this, so that I can make some design decisions to make the most out of this part.

Can we provide any files to help with this. We do have an NDA in place. Please email me if this is possible. 

Hello Matthew, 

I will check with my team on what we can share and if we have anything to illustrate the input stage.  Our THS4531 FDA has the same 200kOhms value for both common-mode and differential input resistance.

This may be an FDA-specific behavior or a design-choice when specifying the part for low-noise and audio applications.  

Could you share your customer account name?

Best,

Alec