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MM_Wombat
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Joined: 12/12/2011
Location: Australia
Posts: 139

Posted: 01:37pm 06 Aug 2016

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Hi all,

The datasheet for the Texas Instruments TPA6012A4 Audio amp shows a typical circuit for the device(Figure 21). The headphone socket in the circuit shows a 4 contact headphone socket, but all I can seem to find is 5 contact versions.

from datasheet

I assume typical 5 contact

Do I just tie pins 3 and 4 together.

This is to mute stereo speakers when headphones are inserted.

Regards MMWombat

Keep plugging away, it is fun learning
But can be expensive (if you keep blowing things up).

Maximite, ColourMaximite, MM+

TassyJim

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Joined: 07/08/2011
Location: Australia
Posts: 5882

Posted: 01:43pm 06 Aug 2016

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I would start with ignoring pin 4, leaving it open circuit.

That way it replicates the top schematic - only one channel used for mute detect.

Jim

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MM_Wombat
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Joined: 12/12/2011
Location: Australia
Posts: 139

Posted: 01:45pm 06 Aug 2016

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Thanks Jim

Now All I have to do is add the part into dex

Regards MMWombat

Keep plugging away, it is fun learning
But can be expensive (if you keep blowing things up).

Maximite, ColourMaximite, MM+

bigmik

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Joined: 20/06/2011
Location: Australia
Posts: 2867

Posted: 09:09pm 07 Aug 2016

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Hi Wombat,

Is that a 3.5mm or 6.5mm Socket?

Kind Regards,

Mick

Mick's uMite Stuff can be found >>> HERE (Kindly hosted by Dontronics) <<<

MM_Wombat
Senior Member

Joined: 12/12/2011
Location: Australia
Posts: 139

Posted: 10:16pm 07 Aug 2016

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@ bigmik

That was a 3.5 mm version.

Was going to order some through ebay, then map those into dex, so I know the footprint fits.

For a shield I should probably go SMT, rather than through hole.

Once I get the schematic finished I might get you to check it for me, if that is ok, haven't built too many boards before.

Successfully added the Keystone 8650C Module into the dex library, so a headphone jack should be easy.

When ordering the caps, should I just get tantalums for everything?

Regards MMWombat

Keep plugging away, it is fun learning
But can be expensive (if you keep blowing things up).

Maximite, ColourMaximite, MM+

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