Neet to review the schematic

Hi derekl ,

I am currently reviewing the provided schematic. I will let you know if this schematic works.

Thanks,

Mae

thank you for your kind support.

I am going to wait for your answer. 

Hi derekl ,

I want to better understand your schematic for AD8479, specifically regarding the internal circuitry. In the datasheet, it mentions the input resistor with a value of 1 Megaohm and an additional resistor in the feedback loop.

Could you please confirm whether the resistors in your schematic are the internal resistors or is it an external resistor? Clarity on this matter would greatly assist in my application of the AD8479.

Looking forward to your thoughts. Thank you!

Regards,

Mae

sorry for the confusion.

It is an external resistor. 

Hello derekl ,

The schematic you provided will work, but I noticed a typo which should be corrected to 14V. I also have a concern regarding impedance matching, which the customer may consider. 

As I mentioned before, the internal resistance of AD8479 is 1M ohm, which contributes to the impedance. I have calculated the impedance for each input, which you can find below. As this is a DC application, the reactance is zero, and the impedance will be equivalent to the resistance. I noticed that the impedance of the first and last inputs is different from the rest, as one side of the input pin is connected to another amplifier. Therefore, I suggest adjusting the resistance of the first and last part of your schematic (green box) to match the rest.

Let me know your thoughts.

Thanks,

Mae

thank you for your great support 

it will be sharing with the customer.