SGTL5000 HP_VGND Circuit Connection?

BVJ2Vs — Tue, 02 Jan 2018 08:06:07 GMT

I am using codec 32pin QFn SGTL5000 on design, i got confused about the HP_VGND connection.

In the datasheet at pin description it says as do not connect HP_VGND to system '0 Volt' ground, but at later stage in the datasheet the description says "connect to the system ground as single point entry ".

So do we need to HP_VGND to system '0 Volt' ground ??

Also do we need to have separate analog and digital GND for Codec.

please go through the attached image !!!!

Thanks for your suggestions in advance !!!!!

Re: SGTL5000 HP_VGND Circuit Connection?

david_diaz — Wed, 03 Jan 2018 21:40:33 GMT

Hello Joe,

HP_VGND pin has a DC voltage hence it should never be instead of the GND_AUDIO (0V voltage).

So, leave HP_VGND open if SGTL5000 Headphone AC Mode is applied, it should never be

connected to ground.

I hope it helps you.

Regards,

David

topic SGTL5000 HP_VGND Circuit Connection? in i.MX Processors

SGTL5000 HP_VGND Circuit Connection?

Re: SGTL5000 HP_VGND Circuit Connection?