ADS1259-Q1: Safety Analysis (Reliability data)

Michael Pichler

Part Number: ADS1259-Q1
Other Parts Discussed in Thread: OPA317-Q1

Dear TI team,

I would like to ask, if there is any supporting documentation for a hazard analysis available for this component, as the ADC shall be used in safety related electrical component.

Furthermore, I used the reliability calculator to get the FIT rates of the ADC, but I am concerned that the provided FIT rates are not 'accurate', as I received 0.2 FIT (60 % conf.) for the ADS1259-Q1. The same value as for the OPA317-Q1. I expected a higher failure rate for the ADS1259-Q1 because of the higher complexity and assumed bigger die.

Thank you very much.

Kind regards
Michael

over 5 years ago

0 Joachim Wuerker over 5 years ago

TI__Mastermind 22015 points

Hi Michael,

thanks a lot for reaching out regarding your functional safety related question.

The ADS1259-Q1 is considered a SEooC (Safety Element out of Context). Means we don't know how this ADC will be used in an end application. A hazard analysis (HARA) is more applicable on system level and is therefore not available for the ADS1259-Q1.

You are correct. The FIT rates provided by the reliability calculator on ti.com are usually not usable for a functional safety analysis. The information is derived using the JESD85 methodology from internal reliability testing and is estimated with a 60% confidence level.

However we can provide FIT rate calculations based on either SN29500 or IEC TR 62380 on request for almost any of our products. We don't share this information publicly on ti.com yet.

Can I contact you using the email address provided in your myTI.com account to discuss this further?

Regards,

0 Joachim Wuerker over 5 years ago in reply to Joachim Wuerker

TI__Mastermind 22015 points

Hi Micheal,

please let me know if you want to be contacted by email to discuss the functional safety FIT rates for our ADCs further.

Regards,

0 Michael Pichler over 5 years ago in reply to Joachim Wuerker

Prodigy 110 points

Hi Joachim,

sorry for the late response and thank you for your feedback. Please contact me via email to discuss this further.

Thank you.

Regards
Michael

0 Joachim Wuerker over 5 years ago in reply to Michael Pichler

TI__Mastermind 22015 points

Hi Michael, I will contact you shortly.

Regards,

0 Michael Pichler over 5 years ago in reply to Joachim Wuerker

Prodigy 110 points

Hi Joachim,

thank you very much.

Regards
Michael

0 Michael Pichler over 5 years ago in reply to Joachim Wuerker

Prodigy 110 points

Hi Joachim,

did you send me an email? I haven't received anything so far - but I will double check my spam folder.

Regarding the reliability standard: SN29500 data are sufficient

Thank you very much for your support.

Regards

Michael

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ADS1259-Q1: Safety Analysis (Reliability data)