SFFS392A september   2022  – may 2023 TMP1827

 

  1.   1
  2.   Trademarks
  3. 1Overview
  4. 2Functional Safety Failure In Time (FIT) Rates
  5. 3Failure Mode Distribution (FMD)
  6. 4Pin Failure Mode Analysis (Pin FMA)
    1. 4.1 WSON-8 Package
  7. 5Revision History

3 Failure Mode Distribution (FMD)

The failure mode distribution estimation for the TMP1827 in Table 3-1 comes from the combination of common failure modes listed in standards such as IEC 61508 and ISO 26262, the ratio of sub-circuit function size and complexity, and from best engineering judgment.

The failure modes listed in this section reflect random failure events and do not include failures resulting from misuse or overstress.

Table 3-1 Die Failure Modes and Distribution
Die Failure ModesFailure Mode Distribution (%)
Serial Communication Error15%
ADC offset out of specification10%
ADC gain out of specification15%
ADC conversion output code bit error20%
Scratchpad data bit error20%

Internal capacitor fail to charge

20%