Several ground nets

On 04/07/2011 07:51 AM, Marco Trapanese wrote:

Hello,

 

in my current design I need a lot of ground nets, each one isolated from

the others.

For example: I use 8 ADM3251. The isolated side should be not connected

to the isolated side of another AMD3251.

 

I also use 8 digital isolator and so on...

 

 

Ok, I could draw a net without any ground symbol but it's not very clear

to read.

 

So, how to draw the same supply pin (e.g. AGND) but with a different

name so they won't be connected together?

Look in supply2.lbr.  There are several ground symbols labeled 0V, AGND,

DGND, GND, GND1, GND2, etc.

Enjoy,

    - Chuck

Il 07/04/2011 15:30, Chuck Huber ha scritto:

Look in supply2.lbr.  There are several ground symbols labeled 0V, AGND,

DGND, GND, GND1, GND2, etc.

Yes, but I don't want to use 20+ different symbols. May I just rename

the nets?

Marco

Marco Trapanese wrote:

Il 07/04/2011 15:30, Chuck Huber ha scritto:

 

>> Look in supply2.lbr.  There are several ground symbols labeled 0V, AGND,

>> DGND, GND, GND1, GND2, etc.

 

Yes, but I don't want to use 20+ different symbols. May I just rename

the nets?

 

Ideally yes but I have tried that with power symbols and just renaming

in the schematic messed up the PADS netlist. So I made library parts for

all the voltages I usually need, all with the same symbol.

It's not that big a deal. For example, you could make a library

"trapanesesupply.lib", then add a dozen grounds. A normal one, then

ISO1, ISO2 and so on. In my experience it makes schematics easier to

read for others if the isolated grounds have a more unusual ground

symbol (but all of those have the same type of symbol).

--

Regards, Joerg

http://www.analogconsultants.com/

Il 10/04/2011 20:56, Joerg ha scritto:

It's not that big a deal. For example, you could make a library

"trapanesesupply.lib", then add a dozen grounds. A normal one, then

ISO1, ISO2 and so on. In my experience it makes schematics easier to

read for others if the isolated grounds have a more unusual ground

symbol (but all of those have the same type of symbol).

Yes. It's exactly what I want and what I was going to do.

Because all of them shares the same symbol I was wondering if I may

avoid to create n symbols, but only changing their names.

Anyway the straight way seems the better one!

Thanks

Marco

Il 10/04/2011 20:56, Joerg ha scritto:

It's not that big a deal. For example, you could make a library

"trapanesesupply.lib", then add a dozen grounds. A normal one, then

ISO1, ISO2 and so on. In my experience it makes schematics easier to

read for others if the isolated grounds have a more unusual ground

symbol (but all of those have the same type of symbol).

Yes. It's exactly what I want and what I was going to do.

Because all of them shares the same symbol I was wondering if I may

avoid to create n symbols, but only changing their names.

Anyway the straight way seems the better one!

Thanks

Marco