封裝資訊
| 封裝 | 針腳 DSBGA (YFD) | 12 |
| 操作溫度範圍 (°C) -40 to 125 |
| 包裝數量 | 運送業者 250 | SMALL T&R |
INA231 的特色
- Bus voltage sensing from 0 V to 28 V
- High- or low-side sensing
- Current, voltage, and power reporting
- High accuracy:
- Gain error: 0.5% (maximum)
- Offset: 50 µV (maximum)
- Configurable averaging options
- Programmable alert threshold
- 1.8-V I2C compliant
- Power-supply operation: 2.7 V to 5.5 V
- Start-up mode options:
- INA231A: active conversion
- INA231B: low-current power down
INA231 的說明
The INA231 is a current-shunt and power monitor with a 1.8-V compliant I2C interface that features 16 programmable addresses. The INA231 monitors both shunt voltage drops and bus supply voltage, providing increased protection by asserting the ALERT pin if the values are outside the programmed range. Programmable calibration value, conversion time, and averaging, combined with an internal multiplier, enable direct readouts of current in amperes and power in watts, thus reducing host processing.
The INA231 senses current on bus voltages that vary from 0 V to 28 V, with the device powered from a single 2.7-V to 5.5-V supply, drawing 330 µA (typical) of supply current. The INA231 is specified over the operating temperature range of –40°C to +125°C.
The INA231 is available in two versions: the INA231A starts up performing continuous conversions of the shunt and bus voltage, whereas the INA231B starts up in low-current, power-down mode.