TheBackShed.com

Forum Index : PCB Manufacturing : Headphone Jack Schematic Question

Author

Message

MM_Wombat
Senior Member

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

Posted: 01:37pm 06 Aug 2016

Copy link to clipboard

Print this post

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

Guru

Joined: 07/08/2011
Location: Australia
Posts: 6097

Posted: 01:43pm 06 Aug 2016

Copy link to clipboard

Print this post

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

VK7JH
MMedit MMBasic Help

MM_Wombat
Senior Member

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

Posted: 01:45pm 06 Aug 2016

Copy link to clipboard

Print this post

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

Guru

Joined: 20/06/2011
Location: Australia
Posts: 2914

Posted: 09:09pm 07 Aug 2016

Copy link to clipboard

Print this post

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

Copy link to clipboard

Print this post

@ 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+

Print this page

To reply to this topic, you need to log in.