INA139: Gain and RL selection

Kurumi Hasegawa

Expert 6361 points

Part Number: INA139

Hi team,

The datasheet of INA139 shows table for RL selection to set the gain.

From my understanding, Gain=RL/1k. And using resistors not listed in the table is fine.

So if I want to set the gain as 13.5, using 13.5kohm (or nearest 13.3k) resister is ok, is it correct?

Best regards,

Kurumi

over 2 years ago

+1 Louis L over 2 years ago

TI__Intellectual 3000 points

Hello Kurumi,

Thanks for the question and using the E2E forum.

You are correct. The table is included as an example for commonly chosen gains, but creating the gain of 13.5 (or 13.3) with a 13.3k resistor is perfectly fine.

Louis

0 Kurumi Hasegawa over 2 years ago in reply to Louis L

TI__Expert 6361 points

Hi Louis,

Thank you so much for the quick response! I understand.

Best regards,

Kurumi

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INA139: Gain and RL selection