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LM4810: LM4810 Mono

Adam Parker
Intellectual 680 points
Part Number: LM4810

Hello all,

This may be a dumb question but figured I'd ask it so I didn't end up with weirdo problems.

Can the LM4810 be used in mono mode?  That is, one channel of audio headed to a single headphone.  I had assume just leave vin2/vout2 N/C but I couldn't find anywhere in the data sheet that confirmed this.

I recognize that I could take a single channel op-amp and do similar. However, I believe the few extra cents are well worth the reduced integration effort and added features if it will work in this mode.

Thanks

  • 0
    TI__Guru* 84915 points

    Hi, Adam,

    Yes, this device can work in both mono and stereo modes. As you correctly mentioned, you would need to leave floating the output that you won't use. I would only suggest to connect the unused analog input to a 0.1uF - 0.47uF capacitor to GND. The analog inputs are biased, so the capacitors are required even if they are not in use.

    I hope this helps you. Please let me know if you have additional questions or comments.

    Best regards,
    Luis Fernando Rodríguez S.