TMS320F2800135: How long can the accuracy of INTOSC be kept in the datasheet spec?

Tsurumoto

Genius 12830 points

Part Number: TMS320F2800135

Tool/software:

The following number are defined at the data sheet

How long can F2800135 keep the accuracy of INTOSC? (e.g. 10 years? 15 years?)

(Is it related to Power On Hours (POH)?)

Thanks and Best regards,

Tsurumoto.

2 months ago

+1 MatthewPate 2 months ago

TI__Guru 74730 points

You are correct, it is related to POH. Like other parameters in the DS these are expected to hold for 100,000 POH at 105C. If you back that out it would equate to ~11.4 years of lifetime.

If the temperature profile is lower than 105C then this will extend; if above it will decrease.

Best,

Matthew

0 Tsurumoto 2 months ago in reply to MatthewPate

TI__Genius 12830 points

I see. So, I couldn't find the statement about "100,000 POH at 105C" in the DS.

Where can I refer it?

+1 MatthewPate 2 months ago in reply to Tsurumoto

TI__Guru 74730 points

Please see the attached app note; https://www.ti.com/lit/an/sprabx4b/sprabx4b.pdf

It appears I mis-spoke in my previous response; we have expectation of 10years @105C temperature vs 100k POH I mentioned. The app note will also give some extra details on how to rate your mission profile to get an expected lifetime for your environment.

Best,
Matthew

0 Tsurumoto 2 months ago in reply to MatthewPate

TI__Genius 12830 points

Thanks! Matthew

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TMS320F2800135: How long can the accuracy of INTOSC be kept in the datasheet spec?