SNVA912A January   2020  – April 2021 REF34-Q1

 

  1.   Trademarks
  2. 1Overview
  3. 2Functional Safety Failure In Time (FIT) Rates
    1. 2.1 DBV-6 Package
    2. 2.2 DBV-5 Package
    3. 2.3 DGK-8 Package
  4. 3Failure Mode Distribution (FMD)
  5. 4Pin Failure Mode Analysis (Pin FMA)
    1. 4.1 DBV-6 Package
    2. 4.2 DBV-5 Package
    3. 4.3 DGK-8 Package

3 Failure Mode Distribution (FMD)

The failure mode distribution estimation for REF34-Q1 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 due to misuse or overstress.

Table 3-1 Die Failure Modes and Distribution
Die Failure ModesFailure Mode Distribution (%)
OUTPUT open or HIZ40%
OUTPUT to GND10%
OUTPUT out of spec voltage or timing40%
OUTPUT stuck on10%