TLV320AIC3104-Q1: Replacement for TLV320AIC3104-Q1

James Zhan

Expert 4365 points

Part Number: TLV320AIC3104-Q1
Other Parts Discussed in Thread: TLV320AIC3104

Hi team,

Due to shortage of TLV320AIC3109, is it okay to use TLV320AIC3104 to replace it?

Thanks.

over 3 years ago

0 Collin Wells over 3 years ago

TI__Guru 62085 points

Hello James,

I will ask our marketing team look into options offline. In the meantime I can confirm that the TLV320AIC3104 is the stereo (2-ch) version of the TLV320AIC3109 and that for for mono (1-ch) operations, the AIC3104 is 100% pin-to-pin and register compatible to the AIC3109. So, yes it's fine to use them interchangeably for mono applications.

0 James Zhan over 3 years ago in reply to Collin Wells

TI__Expert 4365 points

Hi Collin,

Thanks for the help. Let's have discussion via email.

James

0 James Zhan over 3 years ago in reply to Collin Wells

TI__Expert 4365 points

Hi Collin,

They're trying to use 3104 to replace 3109 and this is a mono application.

But I want to double check with you that PIN14 on 3104:MIC2L/LINE2L/MICDET and PIN14 on 3109:MICDET,

do we need to choose the PIN function via register or additional hardware change?

Thanks.

James

0 Collin Wells over 3 years ago in reply to James Zhan

TI__Guru 62085 points

James,

Good question. Using the microphone/headset detection feature with the AIC3104 is similar to the AIC3109 and the headset detection still needs to be register enabled through page 0 registers 13 and 14 before the headset detection will operate.

If the headset detection is not used, then it is best to AC-couple the unused inputs of the device to GND through a ~0.47uF capacitor on the AIC3104 to prevent the inputs from floating. This is not 100% required but is a design best practice.

0 James Zhan over 3 years ago in reply to Collin Wells

TI__Expert 4365 points

Hi Collin,

Thanks for the quick response.

I have a follow up question:

If I enable Headset detection via writing the register 13 bit 7=1, will the 3104 PIN14 automatically select the function as MICDET?MIC2L/LINE2L/MICDE

Or let me put it in this way: how to choose the PIN function of PIN14 since this is a multiple function PIN.

Thanks.

0 Aaron Estrada over 3 years ago in reply to James Zhan

TI__Mastermind 22950 points

Hi James,

You are correct in that enabling headset detect in R13 will set the pin function to MICDET. otherwise the input will be set to a MIC/LINE input.

Reagrds,

Aaron Estrada

0 James Zhan over 3 years ago in reply to Aaron Estrada

TI__Expert 4365 points

Hi Aaron,

Thanks for the advice.

James

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TLV320AIC3104-Q1: Replacement for TLV320AIC3104-Q1