SFFS578A February 2023 – January 2024 INA241A-Q1 , INA241B-Q1 , INA296A-Q1 , INA296B-Q1
Figure 4-1 shows the INA241x-Q1 and INA296x-Q1 pin diagrams for the DDF-8, DGK-8 and D-8 packages. For a detailed description of the device pins, see the Pin Configuration and Functions section in the INA241x-Q1 and INA296x-Q1 data sheets.
| Pin Name | Pin No. | Description of Potential Failure Effects | Failure Effect Class |
|---|---|---|---|
| IN- | 1 | In high-side configuration, a short from the bus supply to GND will occur. High current will flow from bus supply to ground. In low side configuration, normal operation. | B for high side or D for low side |
| GND | 2 | Normal operation. | D |
| REF2 | 3 | If intended connection is anything other than GND, functionality will be affected. | D if REF2 = GND by design; B otherwise |
| NC | 4 | Normal operation. | D |
| OUT | 5 | Output shorts to ground. | B |
| Vs | 6 | Power supply shorted to ground. | B |
| REF1 | 7 | If intended connection is anything other than GND, functionality will be affected. | D if REF1 = GND by design; B otherwise |
| IN+ | 8 | In high-side configuration, a short from the bus supply to GND will occur. High current will flow from bus supply to ground. In low side configuration, input pins are shorted. | B |
| Pin Name | Pin No. | Description of Potential Failure Effects | Failure Effect Class |
|---|---|---|---|
| IN- | 1 | IN- will be at the same potential as IN+. Differential input voltage is effectively 0V. | B |
| GND | 2 | GND is floating. Output will be incorrect as it is no longer referenced to GND. | B |
| REF2 | 3 | Device loses reference voltage. | B |
| NC | 4 | This pin has internal weak pull down. Even though possible, the likelihood of malfunction is low. | D |
| OUT | 5 | Output can be left open. There is no effect on the IC. | C |
| Vs | 6 | No power supply to device. Device may be biased through inputs. Output will be close to GND. | B |
| REF1 | 7 | Device loses reference voltage. | B |
| IN+ | 8 | IN+ will be at the same potential as IN-. Differential input voltage is effectively 0V. | B |
| Pin Name | Pin No. | Shorted to | Description of Potential Failure Effects | Failure Effect Class |
|---|---|---|---|---|
| IN- | 1 | GND | In high-side configuration, a short from the bus supply to GND will occur. High current will flow from bus supply to ground. In low side configuration, normal operation. | B for high side or D for low side |
| GND | 2 | REF2 | If intended connection is anything other than GND, functionality will be affected. | D if REF2 = GND by design; B otherwise |
| REF2 | 3 | NC | Functionality will be affected if REF2 equals to anything but GND by design. | C |
| NC | 4 | OUT | Changing output may affect functionality, but the likelihood is very low. | C |
| OUT | 5 | Vs | Output shorts to supply. | B |
| Vs | 6 | REF1 | Functionality will be affected if REF1 equals to anything but Vs by design. | D if REF1 = Vs by design; B otherwise |
| REF1 | 7 | IN+ | If high voltage (greater than 5.5V) is present, damage will occur. | A |
| IN+ | 8 | IN- | Input differential voltage = 0V | B |
| Pin Name | Pin No. | Description of Potential Failure Effects | Failure Effect Class |
|---|---|---|---|
| IN- | 1 | In high-side configuration, a short from the bus supply to Vs will occur. High current will flow from bus supply to Vs or vice versa. Device could be damaged. | A for high side or B for low side |
| GND | 2 | Power supply shorted to GND. | B |
| REF2 | 3 | If intended connection is anything other than Vs, functionality will be affected. | D if REF2 = Vs by design; B otherwise |
| NC | 4 | Additional small amount of current is drawn by the pull down resistor. | C |
| OUT | 5 | Output shorts to supply. | B |
| Vs | 6 | Normal operation. | D |
| REF1 | 7 | If intended connection is anything other than Vs, functionality will be affected. | D if REF1 = Vs by design; B otherwise |
| IN+ | 8 | In high-side configuration, a short from the bus supply to Vs will occur. High current will flow from bus supply to Vs or vice versa. Device could be damaged. | A for high side or B for low side |