Hello, I want to make an 4-pin RGB (analog) hub that is powered by an external power supply (sata power connector).
It takes up to 2 sources. I have an DG9454E for switch between 1:8 and 2:4 mode. I would like to know it this thing will work.I based my design of some arduino schematics I found.

Spoiler: Parts

• DG9454E
  https://gr.mouser.com/datasheet/2/427/dg9454e-1019484.pdf
  
• 3 * SI5902DC
  https://gr.mouser.com/datasheet/2/427/si5902dc-241117.pdf

Here's what I have designed:

Spoiler: A picture is worth a thousand words :p :p

 

But what is an "RGB Hub?"

 

But what is an "RGB Hub?"

Something like a pub with an H

From Wikipedia for USB hub.

A USB hub is a device that expands a single Universal Serial Bus (USB) port into several so that there are more ports available to connect devices to a host system, similar to a power strip.

I guess Port multiplier would me more describing ?
I take a signal from an RGB source and split it to 4 other ports but using an external power supply for power.

 

What's an RGB source? What signals, voltages speeds etc.?

 

I can not relate your information. What are you trying to do?

 

I can not relate your information. What are you trying to do?

Take an 12v rgb signal and slit it up to several connectors. Also I have a switch it to change from 1 source to 8 outs to 2 *(2 src. 4 outs) which I realized is 30mA rated...

 

You still have not said what your RGB signal is. The only "RGB" signal I know is a red/green/blue video signal but that does not have an amplitude of 12 volts.

Les

 

You still have not said what your RGB signal is. The only "RGB" signal I know is a red/green/blue video signal but that does not have an amplitude of 12 volts.

Les

4 pins +12V , R,G,B common anode

 

Can you show us the data sheet on that board? What are you trying to do.....without abbreviations please.

 

It's a standard of some short , the strips have 3 separate analog channels for each color. Depending the resistance each led brights accordingly.Not sure if there is a datasheet for that..

What I want to do is to take that signal split (clone) it to multiple headers and use an external power supply not to overload the connector which is propably 1A rated. Also I have a switch in to go from 2 sources to 4 headers each or 1 sources to all the 8 headers.

As clear as it geta

 

Do you mean something like this?

https://www.amazon.com/RGB-LED-Light-Strip-Splitter/dp/B071DHPXDT

 

Do you mean something like this?

https://www.amazon.com/RGB-LED-Light-Strip-Splitter/dp/B071DHPXDT

Yes but this just splits the signal /power .I want to use an external power supply.

Something like this

 

From the look of the board.........all you need are 12 V supplies. Do you want to be able to switch supplies on and off at a fast rate?

You have sorta explained how you want things connected..............but not how things are controlled.

I want to know what you are trying to do over all. It is quite possible that someone has done it before.......and already made all the mistakes. It might save YOU a lot of time and money.

 

I want to be a dummy board only just a switch to change between, the single source (1 ->8 headers)
And 2 inputs (1->4 header) so 4 of the lines go straight to 4 outputs and the other 4 outputs either get same as the first 4 or the signal from the 2nd source.
A dp3t switch would be good but I didn't find any small SMD switch of that type so I went with a switch ic.

 

Sorry....I just can not understand you. Good Luck.