Hi kristin,
There seems to be a number of sources for chips/transcievers that can
do what you need, and much more. For example, RFID transcievers
described as "the size of a grain of salt" (which I think generally
means less than the dimensions you specified) and those can transmit
up to a few kilobytes of information, not merely an on/off signal. An
example is that described here:
[ http://www.mindfully.org/Technology/2003/Benetton-Clothing-Transmitters12mar03.htm
]
The chips in this application are, "made by Philips Semiconductors and
fitted with microscopic antennas by an Italian technology startup
called Lab ID". The companies can be contacted via their websites at:
Phillips Semiconductors
[ http://www.semiconductors.philips.com/support/ ]
Lab ID (brochure in PDF format, has product descriptions and contact info)
[ http://www.lab-id.com/new/pdf/labGB.pdf ]
RF MicroDevices makes a chip measuring 3x3x0.9mm that also functions
as an RFID transciever and should meet your needs. A product flyer
for one applicable product can be found at:
[ http://www.rfmd.com/adocs/bf/RF5188-5198.flyer.pdf ]
The company may make other chips that are more appropriate for your
needs, and can be contacted via their website at:
[ http://www.rfmd.com/index.asp ]
There are a host of other companies that manufacture microcontroller
transceivers that should suit your needs:
Silicon Laboratories
[http://www.silabs.com/tgwWebApp/appmanager/tgw/tgwHome?_nfpb=true&_pageLabel=MainPage]
Packages/products page:
[http://www.silabs.com/tgwWebApp/appmanager/tgw/tgwHome?_nfpb=true&_pageLabel=interactiveGuide&col=pkg]
EM Microelectronic
[ http://www.emmicroelectronic.com/default.asp ]
Product page:
[ http://www.emmicroelectronic.com/Line.asp?IdLine=2 ]
AmTel
[ http://www.atmel.com/ ]
Products page (click on ?microcontrollers?)
[ http://www.atmel.com/products/product_selector.asp ]
I hope these sources will be helpful in fulfilling your needs. If the
answer needs any further clarification, please simply request it,
especially before giving it a rating. Thank you for bringing your
question to Google Answers!
Regards,
Andrewxmp
Google search terms used:
micro transciever chip
[://www.google.com/search?hl=en&lr=&q=micro+transciever+chip&btnG=Search ]
microcontroller chip soc
[://www.google.com/search?hl=en&lr=&q=microcontroller+chip+soc&btnG=Search ] |
Request for Answer Clarification by
kristin2005-ga
on
20 May 2005 20:22 PDT
Hello Andrewxmp
Thank you for the answer. So far I was unable to found what I was
looking for. But I felt was getting closer to the product than before.
RFID can identify that the chip is in the area and it is small and
contains battery, fine but it seems like it can not sense the position
of a switch.
"RF MicroDevices makes a chip measuring 3x3x0.9mm that also functions
as an RFID transciever and should meet your needs. A product flyer
for one applicable product can be found at:
[ http://www.rfmd.com/adocs/bf/RF5188-5198.flyer.pdf ]"
I could not see that it could be used as a tranciever.
Silicon labs: Their smallest tranciever seems to bee 8mm
EM: seems to have RadioFrequency Identification chips not on/off sensors.+ to big
Atmel product is also to big about 7mm
What I look for is a " wireless "on/off" sensor " (simply capable of
sensing the position of a switch). The smaller the better. Preferably
with the battery included.
I does not need to be able to both recieve/transmit, only to transmit.
It does not need to transmit any data other than on/off.
Neither does it need the function of a transponder (to identify or
sense its position)
Once again thanks for your effort.
Kristin
|
Clarification of Answer by
andrewxmp-ga
on
22 May 2005 09:21 PDT
Hi,
Can you please describe what sort of switch you are talking about,
about which this chip needs to be able to sense and transmit on/off
status? Thanks
|
Request for Answer Clarification by
kristin2005-ga
on
22 May 2005 12:49 PDT
Hi
That is a force or position sensitive switch. Either one will work.
I will be more than happy if I can find a ultra small one which position could
be remotely sensed from a distanse of say one to two meters.
Kristin
|
Clarification of Answer by
andrewxmp-ga
on
27 May 2005 21:50 PDT
Kristin,
I'm afraid that I've looked into this a lot but feel that I don't know
enough about these sorts of devices nor their applications to be able
to find what you are looking for. I initially thought it was going to
be a more general thing such as those described by the links I
originally gave. Sorry I could not be more effective, and also that I
got sidelined and did not respond to this in a very timely manner.
I suggest you request a refund for this question and re-post it so
that another researcher can attempt to find the information you
require. Linking to this question might be helpful for anyone else
looking for you.
Regards,
Andrewxmp
|
