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ADA4945-1 pin to pin compatible to ADA4940-1 ?

Thread Summary

The user inquired about the pin-to-pin compatibility of the ADA4945-1 with the ADA4940-1 in a double source design. The final answer confirmed that the connections (EPAD to Vs-, DGND to Vs-, DISABLE to Vs+, MODE to Vs+, VCLAMP+ to Vs+, and VCLAMP- to Vs-) are valid, with the only difference being the exposed pad size (1.3mm x 1.3mm for ADA4940-1 vs. 1.6mm x 1.6mm for ADA4945-1).
AI Generated Content
Category: Datasheet/Specs
Product Number: AD4945-1

Hello

I would like to use AD4945-1. My constraint is to have a double source design.
I would like to know if I can wire the AD4945-1 like the ADA4940-1 that is to say :

- EPAD to Vs-. It's OK accroding to datasheet

-DGND to Vs-. It should beOK accroding to datasheet.

-DISABLE will be driven to Vs+ (avaible, not power down feature needed). Is there a MAR versus DGND ? No information on the datasheet.
-MODE to Vs+ (low power mode not needed). No issue according to datasheet.

- VCLAMP+ to Vs+ and VCLAMP- to Vs-. No issue according to datasheet.
In this way the ADA4945-1 will be pin to pin compatible to FDA in LFCP16 like following : 

Of course I checked all this other parameters : they are OK in my particular design (power supply range, input CMR,  output rail to rail...)

Can you confirm the ADA4945-1 and ADA4940-1 could be pin to pn compatible in LFCP16 using this wiring for ADA4945-1.
Thanks for your support

Edit Notes

Correction of the tittle
[edited by: LioMne at 12:12 PM (GMT -4) on 20 Aug 2026]

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