DAC8822: AGND pin connection

prasanna kumara G

Expert 1585 points

Part Number: DAC8822

Hello Team,

To where i should connect AGND pin,

1) Directly to digital GND or how this pin should be connected to digital gnd of board.

2) Do we require any diodes between AGND and digital GND

Regards,

Prasanna G

over 8 years ago

0 Uttam Sahu over 8 years ago

TI__Genius 14220 points

Hi Prasanna,

You should connect the DGND and AGND through a ground plane, if you have one or they should be Kelvin-connected to the load ground. Avoid any impedance between the two grounds.

Regards,
Uttam Sahu
Applications Enginner, Precision DACs

0 prasanna kumara G over 8 years ago in reply to Uttam Sahu

Expert 1585 points

Hello Uttam,

Can you please elaborate on '"kelvin connections".

Regards,

Prasanna G

0 prasanna kumara G over 8 years ago in reply to prasanna kumara G

Expert 1585 points

Hello Uttam,

Can you please share me the layout guidelines for DAC8822.

Regards,
Prasanna G

0 Uttam Sahu over 8 years ago in reply to prasanna kumara G

TI__Genius 14220 points

Hi Prasanna,

You can refer to the following post for the grounding techniques:

e2e.ti.com/.../grounding-principles

We don't have the layout guidelines for DAC8822. Sorry for that.

Regards,
Uttam

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DAC8822: AGND pin connection