Inquiry regarding over voltage protection for LT1999

Hello,

What is commonly affected by this implementation is the guaranteed CMRR.
To preserve the CMRR, we would recommend to use matched resistors or resistors with lower tolerances.

This additional circuitry would add cost and space in your design.

You can also check LT6376 found in this link.
This part has higher input voltage range as compared to LT1999 and may suit your application.

Thanks and regards.

Hello,

What is commonly affected by this implementation is the guaranteed CMRR.
To preserve the CMRR, we would recommend to use matched resistors or resistors with lower tolerances.

This additional circuitry would add cost and space in your design.

You can also check LT6376 found in this link.
This part has higher input voltage range as compared to LT1999 and may suit your application.

Thanks and regards.

Hello, thank you for your prompt reply.

With regard to preservation of CMRR, please let us clarify how we could calculate with external resistor dividing.

Also, please let us clarify whether we should take in consideration except CMRR. i.e. gain and distortion.

They also mentioned that gain or distortion has effected when inputting 10mV.

Since their application is Automotive, LT6376 is not suite for them, and this makes difficult to find out any other bi-directional and higher input voltage solution...

We have referred your ARPL list.

https://www.analog.com/media/en/news-marketing-collateral/product-selection-guide/arpl.pdf