SBAA466 March 2022 ADS7138-Q1
The failure mode distribution estimation for ADS7138-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 resulting from misuse or overstress.
| Die Failure Modes | Failure Mode Distribution (%) |
|---|---|
| Incorrect channel selected | 20 |
| Channel-channel short | 15 |
| ADC output code bit error | 10 |
| ADC gain error out of specification | 10 |
| ADC offset error out of specification | 10 |
| Communication error | 10 |
| Digital window comparator output fails to trip or false trip | 10 |
| Incorrect GPIOx pin configuration | 5 |
| Incorrect AINx/GPIOx pin operation (input/output stuck-at, floating, or incorrect logic level) | 5 |
| Incorrect programmable averaging filter output | 5 |