Analog and digital ground; how to connect?

Familie Maas ha scritto:

I have a circuit which uses an analog and digital ground.

 

These grounds must be connected at one point. How can i achieve this?

 

Note:

I created a dgnd and an agnd ; i connected these two symbols in the

schematic; it results in a net of agnd or dgnd; The electric rule check

results in an ERROR: .... overwritten with more than one signal .

Try supply-dummy.lbr

Marco / iw2nzm

Marco Trapanese wrote:

Familie Maas ha scritto:

 

I have a circuit which uses an analog and digital ground.

 

These grounds must be connected at one point. How can i achieve this?

 

Note:

I created a dgnd and an agnd ; i connected these two symbols in the

schematic; it results in a net of agnd or dgnd; The electric rule

check results in an ERROR: .... overwritten with more than one signal .

 

Try supply-dummy.lbr

 

Marco / iw2nzm

Can't see that on cadsoft's site

Peter Harrison ha scritto:

Can't see that on cadsoft's site

I have it in the lbr folder by default.

Marco / iw2nzm

Some remarks:

AVAILABILITY

In release 4.16r2 it is present. (in my older release 4.13r2 it was also not

available)

HOW WILL IT WORK?

But i dont get the point how it works.

After adding the component to the schematic the component is also present on

the board (two pads).

Between the two pads a component (for example a resistor of 0 ohm) must be

soldered to make the connection between the two nets. Is that the idea?

LAYERS NOT PRESENT

The help says "Ground connector display layer 53 (54) to make copper (route)

from gnd to gnda"

The layers 53 and 54 are not available at all?

Hope to get some clarrification?

Regards,

Johan

"Marco Trapanese" <marcotrapaneseNOSPAM@gmail.com> schreef in bericht

news:fs2bqo$tb0$1@cheetah.cadsoft.de...

Peter Harrison ha scritto:

 

Can't see that on cadsoft's site

 

I have it in the lbr folder by default.

 

Marco / iw2nzm

Familie Maas wrote:

Hi,

 

I have a circuit which uses an analog and digital ground.

 

These grounds must be connected at one point. How can i achieve this?

 

Note:

I created a dgnd and an agnd ; i connected these two symbols in the

schematic; it results in a net of agnd or dgnd; The electric rule

check results in an ERROR: .... overwritten with more than one signal

.

 

Regards,

 

Johan

I've handled this by creating a library part with two pins in the schematic

symbol.  For the footprint, I place two pads on top of each other (either

SMT or through-hole).

You can use this part in your schematic, connecting AGND to one pin and DGND

to the other pin.  In the layout, you will neatly get the pad with an air

wire to both AGND and DGND, but no other air wires between AGND and DGND.

Of course, DRC will complain loudly about the overlapping pads.  I always

look through the list of errors, and ignore the ones relating to the

overlapping pads.

--

Bert Menkveld