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INA237 Power Monitor
INA237
Texas Instrumentsic data converter
The INA237 is a precision power monitor with an 16-bit delta-sigma ADC for current and power monitoring.
In stock
Specifications
8- Operating Voltage
- 2.7 V to 5.5 V
- Supply Current
- 640 µA (typical) (shutdown: 5 µA)
- Interface
- I2C
- Resolution
- 16 bits
- Range
- ±163.84 mV / ±40.96 mV (shunt voltage)
- Accuracy
- ±50 µV (maximum offset)
- Temperature Range
- -40°C to +125°C
- Package
- VSSOP (10) (3.00 mm × 3.00 mm)
Pinout
10| Pin | Name | Functions | Notes |
|---|---|---|---|
| A1 | Digital input | GPIO | I2C address pin. Connect to GND, SCL, SDA, or VS. |
| A0 | Digital input | GPIO | I2C address pin. Connect to GND, SCL, SDA, or VS. |
| ALERT | Digital output | GPIO | Open-drain alert output, default state is active low. |
| SDA | Digital input/output | I2C | Open-drain bidirectional I2C data. |
| SCL | Digital input | I2C | I2C clock input. |
| VS | Power supply | POWER | Power supply, 2.7 V to 5.5 V. |
| GND | Ground | GND | Ground. |
| VBUS | Analog input | ADC | Bus voltage input. |
| IN- | Analog input | ADC | Negative input to the device. For high-side applications, connect to load side of sense resistor. For low-side applications, connect to ground side of sense resistor. |
| IN+ | Analog input | ADC | Positive input to the device. For high-side applications, connect to power supply side of sense resistor. For low-side applications, connect to load side of sense resistor. |
Interactive pinout
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INA237
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