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INA228 Power Monitor
INA228
Texas Instrumentsic data converter
The INA228 is a high-resolution power monitor with a 20-bit ADC for precise current, voltage, and power measurements.
In stock
Specifications
8- Operating Voltage
- 2.7 V to 5.5 V
- Supply Current
- 640 µA (typical) (shutdown: 5 µA)
- Interface
- I2C
- Resolution
- 20 bits
- Range
- -163.84 mV to 163.84 mV (ADCRANGE = 0); -40.96 mV to 40.96 mV (ADCRANGE = 1)
- Accuracy
- ±0.5% full scale, –40°C to +125°C for power monitoring
- Temperature Range
- -40°C to +125°C
- Package
- VSSOP (10) (3.00 mm × 3.00 mm)
Pinout
10| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | A1 | GPIO | I2C address pin |
| 2 | A0 | GPIO | I2C address pin |
| 3 | ALERT | GPIO | Open-drain alert output, default state is active low |
| 4 | SDA | I2C | Open-drain bidirectional I2C data |
| 5 | SCL | I2C | I2C clock input |
| 6 | VS | POWER | Power supply, 2.7 V to 5.5 V |
| 7 | GND | GND | Ground |
| 8 | VBUS | ADC | Bus voltage input |
| 9 | IN- | 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. |
| 10 | IN+ | 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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INA228
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