need infrared design help

[cyb0rg777]

I am trying to replace the discontinued 276-0137 (aka gp1u52x)in my project.
I use the demodulator circuit by removing the photodiode on the circuitboard and wiring in my own.
So obviously I can't use modern replacements that are sealed in plastic.
The circuit board inside is very small and takes up little space.
What I'm looking for is a demodulator with few external parts .
Which ic to use.
A double or quad circuit chip would be most useful.Thanks

 

[Roff]

Vishay makes them. Mouser sells them. I hope you find something here that will work. Otherwise, get an old TV, VCR, or something else that is IR controlled and rip the receiver from it.

 

[cyb0rg777]

I've already got some of those vishay recievers .
My chances of finding what I need in a vcr are pretty slim.
Could you recommend an ic for building the demodulator from scratch?
I've tried prototyping some circuits with the 567 and 555 but no luck yet.
I could really use a speciallized ic.
Any links or circuit diagrams?
Why reinvent the wheel?
Thanks

 

[Nigel Goodwin]

The IC's for doing it are long obselete, and were fairly layout critical to use as well - why can't you just use a modern IR receiver chip as suggested (which out perform the old ones anyway!)

 

[Roff]

Your problem escapes me. Why can't you use an integrated photodiode/demodulator instead of having to keep them separate?