TLV320AIC3204: Headphone and line out amplifier terminated with 600 ohm

Santosh Vema

Part Number: TLV320AIC3204

Hello,

We are using LOR and LOL and terminated with 600 ohm. I use alsa's aplay to play a 1kHz tone and I can hear the tone on the output.

We are also using HPR and HPL as another output pair and terminated with 600 ohm, When I use aplay, I can't hear any tone on the output.
I'm wondering if we can use/configure HPR and HPL, so that they can be terminated with 600 ohm?

The configuration we are planning to use is Left DAC as one differential channel going to LOL/LOR and Right DAC as another differential channel going to HPR/HPL.

Thanks,

Santosh

over 5 years ago

0 Santosh Vema over 5 years ago

Prodigy 195 points

Hello,

I have attached the signal flow diagram for the setup we are planning to use. We are planning to use both HPR/HPL and LOR/LOL simultaneously, can we do this? Please let me know if it makes sense.

We are using alsamixer to enable the ADC and DAC's.

0 Diljith over 5 years ago in reply to Santosh Vema

TI__Expert 6440 points

Hi Santosh,

There shouldn't be an issue using a 600 ohm impedance with headphone driver. What do you observe when you probe the HPL and HPR signals?

Best Regards.

0 Diljith over 5 years ago in reply to Diljith

TI__Expert 6440 points

Hi Santosh,

Since we haven't heard back from you, we assume that you have found a resolution. I shall close this thread. Please reply to this in case you have any further queries on this.

Best Regards.

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TLV320AIC3204: Headphone and line out amplifier terminated with 600 ohm