SLOA298 October   2020 OPA320-Q1

 

  1.   Trademarks
  2. 1Overview
  3. 2 Functional Safety Failure In Time (FIT) Rates
  4. 3Failure Mode Distribution (FMD)
  5. 4Pin Failure Mode Analysis (Pin FMA)

Failure Mode Distribution (FMD)

The failure mode distribution estimation for Device Name 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 (Hi-Z)

20%

Output saturate high

25%

Output saturate lot

25%

Output functional, not in specification voltage or timing

30%