Overview
The INA230AIDGSR, produced by Texas Instruments, is a highly versatile and accurate current-shunt and power monitor. This device features an I²C interface and supports 16 programmable addresses, making it suitable for a wide range of applications. The INA230 monitors both shunt voltage drops and bus supply voltage, providing digital current, voltage, and power readings. It is powered by a single supply voltage ranging from 2.7V to 5.5V and operates over a temperature range of –40°C to +125°C. The device is designed for precise measurement and control in various high-performance systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Bus Voltage Range | 0V to 36V | V |
| Supply Voltage Range | 2.7V to 5.5V | V |
| Gain Error (Maximum) | ±0.3% | % |
| Offset Voltage (Maximum) | 25µV | µV |
| ADC Resolution | 16 bits | bits |
| LSB Step Size (Shunt Voltage) | 2.5µV | µV |
| LSB Step Size (Bus Voltage) | 1.25mV | mV |
| Quiescent Current | 330µA (typical) | µA |
| Shutdown Current | 0.5µA (typical) | µA |
| Packages | 16-pin RGT (VQFN), 10-pin DGS (VSSOP) | |
| Operating Temperature Range | –40°C to +125°C | °C |
Key Features
- High- or low-side sensing capability
- Current, voltage, and power reporting
- High accuracy with 0.3% gain error and 25µV offset
- Configurable averaging options
- Programmable alert threshold
- I²C and SMBus-compatible interface
- Programmable calibration value, conversion times, and averaging
- Internal multiplier for direct readouts of current in amperes and power in watts
- Support for continuous and triggered operating modes
- Alert functions for voltage, current, and power over-limit conditions
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 operating voltage range of the INA230?
The INA230 operates with a supply voltage ranging from 2.7V to 5.5V.
- What is the maximum bus voltage that the INA230 can sense?
The INA230 can sense bus voltages from 0V to 36V.
- What is the resolution of the ADC in the INA230?
The ADC resolution of the INA230 is 16 bits.
- What are the package options available for the INA230?
The INA230 is available in 16-pin RGT (VQFN) and 10-pin DGS (VSSOP) packages.
- Does the INA230 support both high-side and low-side sensing?
- How does the INA230 report current and power values?
The INA230 measures shunt voltage and bus voltage, then calculates current and power based on the calibration register value and the shunt resistor value.
- What are the key accuracy specifications of the INA230?
The INA230 has a maximum gain error of ±0.3% and a maximum offset voltage of 25µV.
- Can the INA230 be configured for different conversion times and averaging options?
- Does the INA230 have alert functions for over-limit conditions?
- What is the typical quiescent current of the INA230?
The typical quiescent current of the INA230 is 330µA.
