Another Single Side LM4780 Board..

[Dxvideo]

Hi all,

I designed a SS LM4780 board. Because i have a pair of LM4780 but still i dont know what will i do with them.
Please have a look and make some critics about it. I some inspired form Pink Mouse's SS design. It made on Eagle 4.16r1 and the component from Pink Mouse's board. I downloaded LM library from CAD soft site but LM4780 is not suit on dimensions. So i had you use Pinks component. Anyway i can send it who wants.

An externally hosted image should be here but it was not working when we last tested it.

 

[pinkmouse]

Looks good. Two points. You want the star ground on one of the other ground connections, not the input ground, and two, turn off the islands for your copper flood.

Oh, and I personally hate curved tracks, aesthetically speaking, but that's just me, and it won't affect operation at all!

 

[Dxvideo]

Should i determine another star point?

 

[Dxvideo]

Like that;

An externally hosted image should be here but it was not working when we last tested it.

 

[Dxvideo]

A better view.. And simplified input/output terminals.

An externally hosted image should be here but it was not working when we last tested it.

Any comment?

 

[Dxvideo]

Nobody has any comment? Or i am loosing my credit in this forum!

 

[pinkmouse]

Probably because just about everything that can be said about chip amp layouts has already been stated in one thread or another.

You still haven't moved the star ground to one of the ground pins.

 

[Dxvideo]

Hmm.. This is a misunderstaning... Should i move it an independent point?

 

[pinkmouse]

Star on GND 4, with a link to SG.

 

[pinkmouse]

Or use your original layout and link that star to GND1, then GND1 and 2 run back to the chassis ground.

 

[Dxvideo]

I got it... trying.

 

[kuldeepsingh]

How about this One

How about this Layout, made in autoCAD

 

[Dxvideo]

I guess you cannot realise it because of the tracks between pins. LM4780 has very narrow pin to pin distance. I cannot see the GND line so i cannot say anything about it.
By the way;

An externally hosted image should be here but it was not working when we last tested it.

This is my last version. Today i will send it to my PCB maker.

 

[MANU97]

hello!
no speak English....
for 'dxvideo' ost file Eagle.brd in pm, please?
Very Good!
bye.

 

[Dxvideo]

I am sorry Manu.. Its a REALLY old topic.. And I afraid everything about that pcb is LOST..

 

[MANU97]

Ok......(
I'am sad!

 

[NYJCCS]

Schematic of LM4780

I guess you cannot realise it because of the tracks between pins. LM4780 has very narrow pin to pin distance. I cannot see the GND line so i cannot say anything about it.
By the way;

An externally hosted image should be here but it was not working when we last tested it.

This is my last version. Today i will send it to my PCB maker.

Hi, I would like to look at the schematic for this PCB design and the bill of materials.
Thank you.