Microphone MUX for type-C

Antony Lin

Other Parts Discussed in Thread: TS5USBA224, TS3A26746E, TS5A3157, SN74LVC1G3157, TS3DS26227, TS3USB3000, TS3USB221, TS3USB30E

Hi,

Regarding Audio over type-C application, we have TS5USBA224 as USB/Audio mux and Ts3A26746E as MIC/GND 2x2 switch. Now my customer need something different as a 1:2 MUX between SBU1 and AGND (also for used between SBU2 and MIC).

Do we have suitable solution for this?

Thanks!

Antony

over 8 years ago

0 ShreyasRao over 8 years ago

TI__Guru 57370 points

Hi Antony ,

I would check out this USB Type C audio reference design and blog post for more information.

Is there any requirements and spec which is cared about by the customer for the 1:2 switch . there are numerous solutions with TI with Vcc , channels , speed considerations . SN74LVC1G3157 / TS5A3157 for single 1:2 switch .

0 Antony Lin over 8 years ago in reply to ShreyasRao

TI__Genius 13480 points

Hi Shreyas,

The MUX is used for AUX pins of display mode. After checking DP spec, the rate is up to 720MHz for DP1.2. Do you think it's ok to use TS3DS26227? Can it be used to switched between analog microphone and DP AUX pin?

Thanks!

Antony

0 Adam Torma over 8 years ago in reply to Antony Lin

TI__Mastermind 45370 points

Antony,

Yes, the TS3DS26227 device can support 720MHz and it is a 2 channel 1:2 mux.

You can also look at the several USB switches that are high bandwidth 2 channel 1:2 mux like the TS3USB3000, TS3USB221, TS3USB30E.

Thank you,

Adam

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Microphone MUX for type-C