RGB to YPbPr Video IC?

[jamisonia]

Does anybody know of a good IC solution to convert RGB to YPbPr? I'm trying to design a box that would take the RGB signals ubiqutious is older video game systems, and convert it to YPbPr for use with component inputs. Also this would be for only very small projects, so it would be great if this IC were available at digikey or mouser in single quantities.

I should also mention that all video game systems carry composite sync on a seperate line. So I need to take RGB + Sync and convert it to YPbPr

 

[Harald Kapp]

E.g.
http://circuits.linear.com/158
http://www.epanorama.net/links/videocircuits.html#converters
http://www.alldatasheet.com/datasheet-pdf/pdf/31194/TOSHIBA/TA1287.html

Harald

 

[jamisonia]

Thank you. I had noticed the linear chip before, but I was confused by this statement:


It should be noted that to ensure Y includes a correct sync, correct syncs should be present at all three inputs or else added directly at the Y output (gated 8.5mA current sink or 350Ω switched to –3.3V).

I need to add the sync later since I have composite sync. What does gated 8.5ma current sink or 350 Ohm switched to -3.3V mean?

 

[Harald Kapp]

"gated" means a switchable current source.
Alternatively they sugggest adding a 350 Ohm resistor to -3.3 V which can be switchend "on" and "off". You can implement this for example by an analog MOS switch or a simple transistor which is controlled by the sync signal.

Harald