SFFS507 September 2022 AFE781H1
The failure mode distribution estimation for the AFE781H1 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.
| Die Failure Modes | Failure Mode Distribution (%) |
|---|---|
| DAC output incorrect or not functional | 36 |
| Digital communication error | 19 |
| HART communication not functional | 19 |
| Diagnostic ADC measurement incorrect or not functional | 16 |
| Reset at power-on and internal supplies not functional | 7 |
| Internal oscillator not functional | 3 |