> hi all, i am working on a IR transmitter receiver design and using
> sharp IS1U60 receiver. But i cant detect transmitter signals 50 cm.
> far from the receiver. i try to amplify current with opamp but i does
> not do any good. what shall i do?

These devices are very simple to use when properly connected and when
supplied with a modulated 38 kHz IR signal.

What are you using as a "transmitter"
For starters try using a TV IR controller.
These send a signal at, typically, 38 kHz and modulate it with a data stream
with bit times around 1 mS.
The IS1U60 is a 38 kHz receiver.

If you can't see a signal from something like that then you are probably
doing something wrong.

Check whether you have the right connections.
Looking into the lense side with leads downwards the connections are

        Output / Ground   V+

Check that V+ is under 6 volts and preferably 5 volts.

Are you sending a modulated 38 kHz beam which you have generated?
If so this MUST be modulated with slower speed digital data - the units WILL
NOT WORK with a steady IR beam modulated at 38 kHz with no imposed data
stream. ie they don't work for a  steady "DC:" beam.

Datasheet at

        http://www.hvwtech.com/dnload/datasheets/is1u60.pdf



            Russell McMahon

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