INA321: INA321 - minimum resistor value

Mattia Dell'Oca

Prodigy 40 points

Part Number: INA321

Hi,

In a new project I need to use the INA321 Amplifier, setting a gain of 500.

Since in this case R2 must be 100 times R1, which is the minimun value of R1 ? Can I use for example values of 1kOhm?

Thank you in advance,

Mattia

over 2 years ago

+1 kai klaas69 over 2 years ago

Guru 140200 points

Hi Mattia,

the values a rather uncritical. Following figure 1 of datasheet, R1 = 2k and R2 = 200k seem to be a good choice. But R1 = 1k and R2 = 100k should also work well.

Kai

+1 Tamara M Alani over 2 years ago

TI__Genius 10850 points

Hi Mattia,

Thanks for your post. Kai is correct. I will close this thread now.

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INA321: INA321 - minimum resistor value