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the AD8421's input
KAAKWU Posted: 27 Oct 2021, 02:10 AM
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kkkk

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Posts: 1
Joined: 27-October 21
Hello, you guys! Nice to meet you.
May I inquire whether the big resistance grounding resistors, such as R1 and R2 in the figure, used to give a DC loop to the AD8421's input will introduce additional thermal noise? If so, how should the noise generated be calculated?
The circuit I designed refers to the related pdf:https://www.utmel.com/components/ad8421-amplifier-pinout-datasheet-schematic?id=745shown below.
Thanks!
K


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mit Posted: 29 Oct 2021, 10:10 AM
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yeah whatever

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Joined: 4-May 16
Interesting. What's the application here?

There is a formula for calculating Johnson noise (online calculator here) but other than that I don't think I'm savvy enough with analog electronics to help you.

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