Author Topic: want to make a KVM with PS/2 input and VGA output  (Read 1068 times)

0 Members and 1 Guest are viewing this topic.

Offline legacyTopic starter

  • Super Contributor
  • ***
  • !
  • Posts: 4415
  • Country: ch
want to make a KVM with PS/2 input and VGA output
« on: May 03, 2019, 03:41:37 pm »
I need to integrate a dedicated KVM into a project,  and I'd like to make it by myself rather than buying a product. The first question is: hints on how making the analog multiplexer for the VGA stuff.
 

Offline pwlps

  • Frequent Contributor
  • **
  • Posts: 372
  • Country: fr
Re: want to make a KVM with PS/2 input and VGA output
« Reply #1 on: May 05, 2019, 01:34:24 pm »
I need to integrate a dedicated KVM into a project,  and I'd like to make it by myself rather than buying a product. The first question is: hints on how making the analog multiplexer for the VGA stuff.

If you want to design your own circuit, for the video part you can use a dedicated video switch IC like the LMH6570MA (as I understand what you need is a DPST, not SPDT ?). This one might be an overkill for your app (I know this one because I once needed very fast and clean RF switching), and you will need three of them but it will work (the datasheet specifies "Multi Input Video Monitor" as one of the possible applications).

Edit: after a quick search I found this :
https://www.maximintegrated.com/en/products/analog/analog-switches-multiplexers/MAX4360.html

« Last Edit: May 05, 2019, 01:48:06 pm by pwlps »
 

Offline legacyTopic starter

  • Super Contributor
  • ***
  • !
  • Posts: 4415
  • Country: ch
Re: want to make a KVM with PS/2 input and VGA output
« Reply #2 on: May 05, 2019, 03:20:12 pm »
DPST, not SPDT

{ R, G, B } analog signals, on a common analog ground.
Plus { H, V } digital signals, on a common digital ground.
 

Offline legacyTopic starter

  • Super Contributor
  • ***
  • !
  • Posts: 4415
  • Country: ch
Re: want to make a KVM with PS/2 input and VGA output
« Reply #3 on: May 05, 2019, 03:22:43 pm »
I am also considering the TI TS5V330 Quad SPDT Wide Bandwidth Video Switch.
It has a bandwidth of 300MHz, low on resistance of about 3 ohms but it only has 4 inputs.

 

Offline SiliconWizard

  • Super Contributor
  • ***
  • Posts: 15185
  • Country: fr
Re: want to make a KVM with PS/2 input and VGA output
« Reply #4 on: May 05, 2019, 05:36:47 pm »
You can consider this: https://www.maximintegrated.com/en/products/analog/analog-switches-multiplexers/MAX4885.html
Pretty much an all-in-one integrated solution.
 

Offline legacyTopic starter

  • Super Contributor
  • ***
  • !
  • Posts: 4415
  • Country: ch
Re: want to make a KVM with PS/2 input and VGA output
« Reply #5 on: May 05, 2019, 07:16:17 pm »
You can consider MAX4885

thanks! It looks awesome!
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf