INA1620: I need a way to take two headphone amplifier inputs and mix them out.

shin chol choi

Intellectual 260 points

Part Number: INA1620

I want to use this part INA1620 H.P AMP.

and it needs to mix output from the other H.P (AMP1, AMP2)

Is there any solutions?

over 4 years ago

0 Tamara M Alani over 4 years ago

TI__Genius 10850 points

Hello Shin Chol Choi,

Thank you for your post, I can help you.

You may utilize the integrated thin-film resistors and configure the INA1620 as an inverting summer. I've attached an image below of this operation with simple DC values. I have also attached my TINA simulation file for your reference.

INA1620 inverting summer.TSC

-Tamara Alani

Amplifiers

Amplifiers forum

INA1620: I need a way to take two headphone amplifier inputs and mix them out.