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TIR1000: encoder/decoder at 115Kbps at minimum for lift application

Part Number: TIR1000
Other Parts Discussed in Thread: BOOST-IR

Hi,

For a lift project we have to communicate data via optical interface and we would have identified the TIR1000PWR as IrDa Encoder / decoder.

We should not follow a particular standard but we must reach the speed of 115Kbps at minimum.

Do you think TIR1000PWR is suitable for the purpose or do you have other proposals?
Another constraint is the guarantee of non-obsolescence of the component being the industrial application for at least 10 years.


Thank you,

Antonio

  • Hi Antonio,

    TIR1000 can support 115 kbps, so as long as the UART used in the system can support the 16X clock signal that is synchronous to U_TXD I think TIR1000 would be a good choice.  Using a pulsed signal such as in IrDA is useful in decreasing the overall current consumption since it reduces the amount of time that the LED is emitting.  Plus, using this device would make it simple if the system did need to support the IrDA standard in the future and would reduce interoperability concerns that might otherwise be associated with a totally-proprietary implementation.

    Regarding non-obsolescence I can't make any specific guarantees on behalf of TI, but I would refer you to our general obsolescence policy below:

    https://www.ti.com/support-quality/faqs/quality-policies-procedures-faqs.html

    This product has been in volume production for many years and seems to experience steady demand.

    Regards,
    Max

  • Hi Max,

    Thanks for the information, in your opinion besides the IrDA driver there are no other solutions to communicate by infrared?

    Customer is not tied to the IrDA standard.

    Please also write me in private if needed.

    Many Thanks,

    Antonio F.

  • Antonio,

    Yes, other solutions using different modulation techniques could be used as well.  Different options based around modulation at a ~38 kHz carrier is common, for example in consumer electronics.  There is a good overview of different approaches given in this app note:

    https://www.ti.com/lit/an/slaa644b/slaa644b.pdf

    For the hardware implementation, you may want to reference the BOOST-IR BoosterPack for MSP430.  In general I believe these kinds approaches are generally used for lower data rates.

    Max