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My project is to monitor two video sources at the same time on one tv screen, with the help of picture in picture (PIP). The PIP IC I use is called PVP9390A
( http://www.micronas.com/products/by_function/pvp_9390a/product_information/index.html ).
But the problem with this is that I only get an RGB or an YUV signal out... So my question is.. Is there a "easy" way to make an circuit without using IC such as AD725.(RGB ->CVBS converter).
The reason for needing the CBVS-output is because i can`t sendt more than one signal through the wireless system...
No easy way, you need a PAL encoder - an easy option would be to use an old Commodore Amiga A500 modulator, these accept RGB and output composite video and modulated RF. It uses an MC1377 PAL endcoder chip if I remember correctly?.
I would like to introduce myself, I'm jdahl's partner at this school-project.
I've been looking at the motorola MC1377, but our chip needs to be able to work at -20 degrees celsius. And that chip copes with "only" 0 degrees celsius.
Seems like we need to use the AD725 afterall, no biggy, but just wanted to see if there were more altarnatives. Thank for the help!
I would be surprised if the MC1377 didn't work fine at -20 degrees, the specification is simply a normal domestic one - only military and industrial parts are usually specified at a wider range. This doesn't mean the chip is any different, just that it's not been tested at that range.
Maybe so, but this is our final school project and we're developing a prototype-module for a company. And the company has told us that the module has to able to work in enviroments as -20 degrees, they have demanded this.
So even if the MC1377 may most likely work I can't take the chance, since it's not properly tested.
Anyways, I've ordered 2 AD725 samples. They seem very easy to use.
Maybe we'll make a new thread and describe more details about our project.
I know we'll have some problems at some point of time, and this forum seems to be excellent in getting hint, tips and expertice.
Thank you for your replies!