RF IC's

They make single chip solutions for remote controls and car lock/unlock. The come in transmit, receive, and transciever version.

Try googling for >ISM FSK< or ASK. That should find a few chips and you can then try the manfacturers main web stuff to find the rest of their offerings.

--
These are my opinions, not necessarily my employer's.  I hate spam.

snipped-for-privacy@ip-64-139-1-69.sjc.megapath.net (Hal Murray) wrote in news:3dCdndiiPZXF81_bnZ2dnUVZ snipped-for-privacy@megapath.net:

I don't know what has changed the past few years, but in mass produced RF remotes and their receivers, the transmitter is built with discretes, with the antenna on the PCB. The chip only produces the data ro be trasnmitted. The receiver also has a discrete tuned circuit (also with PCB based resonant circuits), with an LM324 or LM358 as a data detector.

Here is an example of the sort of stuff I was thinking of:

--
These are my opinions, not necessarily my employer's.  I hate spam.

Because I was serching for rfid chips before a few weeks, I was found the AT24RF04

(simple) Surprising, searching again the Atmel site for rfid I found nothing for the above chips. But to avoid an external coil, if you select a 13.56MHz rfid you can use a pcb coil. E.g. check the MCRF450.

-- Yianni

9jir snipped-for-privacy@yahoo.gr (Remove the number nine from my email address to send me email)

Also MCRF355/360, AT88RF020.