Overview
The INA230AIRGTT from Texas Instruments is a highly versatile and accurate current-shunt and power monitor. This device features an I2C interface and is capable of monitoring both shunt voltage drops and bus supply voltage. It is designed to provide digital current, voltage, and power readings, making it essential for precise decision-making in various controlled systems. The INA230 operates over a wide voltage range from 0V to 36V and is powered by a separate supply ranging from 2.7V to 5.5V. It is available in 16-pin RGT (VQFN) and 10-pin DGS (VSSOP) packages, making it suitable for a variety of applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Bus Voltage Range | 0V to 36V | V |
| Supply Voltage Range | 2.7V to 5.5V | V |
| Quiescent Current | 330 μA (typical) | μA |
| Shutdown Current | 0.5 μA (typical) | μA |
| ADC Resolution | 16 bits | - |
| Shunt Voltage Gain Error | ±0.3% (maximum) | % |
| Bus Voltage Gain Error | ±0.3% (maximum) | % |
| Conversion Time | 140 μs to 9.068 ms | μs/ms |
| Operating Temperature Range | –40°C to +125°C | °C |
| Package Options | 16-pin RGT (VQFN), 10-pin DGS (VSSOP) | - |
Key Features
- High- or low-side sensing capability
- Current, voltage, and power reporting with high accuracy
- Configurable averaging options and programmable alert thresholds
- I2C and SMBus compatibility with 16 programmable addresses
- Programmable calibration value, conversion times, and averaging
- Internal multiplier for direct readouts of current in amperes and power in watts
- Alert functions for voltage, current, and power over-limit conditions
- Low input bias current and high common-mode rejection ratio
Applications
- Rack servers
- Wireless infrastructure
- High-performance computing
- Power management systems
- Battery cell monitors and balancers
- Power supplies
- Test equipment
Q & A
- What is the voltage range that the INA230 can monitor?
The INA230 can monitor bus voltages ranging from 0V to 36V.
- What is the supply voltage range for the INA230?
The INA230 is powered by a supply voltage ranging from 2.7V to 5.5V.
- What is the typical quiescent current of the INA230?
The typical quiescent current of the INA230 is 330 μA.
- What is the ADC resolution of the INA230?
The INA230 has an ADC resolution of 16 bits.
- What are the key accuracy specifications of the INA230?
The INA230 has a maximum gain error of ±0.3% for both shunt and bus voltage measurements.
- What are the available package options for the INA230?
The INA230 is available in 16-pin RGT (VQFN) and 10-pin DGS (VSSOP) packages.
- Does the INA230 support I2C and SMBus interfaces?
Yes, the INA230 is compatible with both I2C and SMBus interfaces and has 16 programmable addresses.
- What are some of the key applications of the INA230?
The INA230 is used in rack servers, wireless infrastructure, high-performance computing, power management systems, battery cell monitors, power supplies, and test equipment.
- How does the INA230 handle alert conditions?
The INA230 has alert functions for voltage, current, and power over-limit conditions, which can assert the AFF bit and the Alert pin based on programmed thresholds.
- What are the operating temperature limits of the INA230?
The INA230 operates over a temperature range of –40°C to +125°C.
