SFFS434A december   2022  – july 2023 TMP1826

 

  1.   1
  2.   Trademarks
  3. 1Overview
  4. 2Functional Safety Failure In Time (FIT) Rates
    1. 2.1 VSSOP-8 Package
    2. 2.2 WSON-8 Package
  5. 3Failure Mode Distribution (FMD)
  6. 4Pin Failure Mode Analysis (Pin FMA)
    1. 4.1 VSSOP-8 Package
    2. 4.2 WSON-8 Package
  7. 5Revision History

3 Failure Mode Distribution (FMD)

The failure mode distribution estimation for the TMP1826 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 Modes Failure Mode Distribution (%)
Serial Communication Error 15%
ADC offset out of specification 10%
ADC gain out of specification 15%
ADC conversion output code bit error 20%
Scratchpad data bit error 20%

Internal capacitor fail to charge

20%