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Audio reference design that supports IEC 60601-1-8 Audible Alarm standard for medical

David Daggett
Intellectual 945 points
Other Parts Discussed in Thread: TPA2005D1

Has TI supported any audio alarm designs in medical that meet the IEC 60601-1-8 standard?  Have these been documented with any design guides, app notes, or reference designs?

Thanks,
David

  • 0
    TI__Genius 16270 points

    David,

    Unfortunately I am not aware of any standard reference designs for audio alarms that have been tested for IEC60601-1-8. 

  • 0 in reply to Patrick Galvin
    TI__Guru**** 189401 points

    David,

    I do know medical customers have used our class-D amps like TPA2005D1 to provide the audio feedback as discussed in IEC 60601-1-8. I am not sure how to implement the ramp-up and ramp-down timing as required by the spec, though. The trick isn't in the amp, as you know, it's how you generate the warning signal itself. You could probably use something like an MSP430 to store the samples required to achieve the required waveform. There are several MSP430 app notes on storing audio. For example, this one, this one, and this one.

    -d2