Overview
The INA231BIYFDR, produced by Texas Instruments, is a highly versatile current-shunt and power monitor. This device features a 1.8-V compliant I2C interface and supports 16 programmable addresses. It is designed to monitor both shunt voltage drops and bus supply voltage, providing enhanced protection by asserting the ALERT pin if the measured values exceed the programmed range. The INA231 is powered by a single supply ranging from 2.7 V to 5.5 V and operates over a temperature range of –40°C to +125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VS) | 2.7 to 5.5 | V |
| Bus Voltage Range | 0 to 28 | V |
| Shunt Voltage Range | –30 to +30 | V (differential) |
| Gain Error | 0.5% | |
| Offset | 50 μV | |
| Supply Current | 330 μA (typical) | |
| Operating Temperature Range | –40 to +125 | °C |
| Package Type | DSBGA-12 | |
| Package Size | 1.65 mm × 1.39 mm × 0.40 mm |
Key Features
- Bus voltage sensing from 0 V to 28 V
- High- or low-side sensing capability
- Current, voltage, and power reporting
- High accuracy with 0.5% gain error and 50 μV offset
- Configurable averaging options
- Programmable alert threshold
- 1.8-V I2C compliant interface
- Programmable calibration value and conversion times
- Internal multiplier for direct readouts of current and power
- Two start-up mode options: active conversion (INA231A) and low-current power down (INA231B)
Applications
- Smartphones
- Tablets
- Servers
- Computers
- Power management systems
- Battery chargers
- Power supplies
- Test equipment
Q & A
- What is the operating voltage range of the INA231BIYFDR?
The INA231BIYFDR operates with a supply voltage ranging from 2.7 V to 5.5 V.
- What is the bus voltage range that the INA231BIYFDR can monitor?
The device can monitor bus voltages from 0 V to 28 V.
- What are the accuracy specifications of the INA231BIYFDR?
The INA231BIYFDR has a gain error of 0.5% and an offset of 50 μV.
- Does the INA231BIYFDR support programmable alert thresholds?
- What are the start-up mode options for the INA231BIYFDR?
The INA231BIYFDR is available in two versions: INA231A, which starts up in active conversion mode, and INA231B, which starts up in low-current power-down mode.
- How does the INA231BIYFDR report current and power measurements?
The device uses an internal multiplier to provide direct readouts of current in amperes and power in watts, reducing the need for host processing.
- What is the typical supply current of the INA231BIYFDR?
The typical supply current of the INA231BIYFDR is 330 μA.
- What is the operating temperature range of the INA231BIYFDR?
The operating temperature range is from –40°C to +125°C.
- What types of sensing does the INA231BIYFDR support?
The device supports both high-side and low-side sensing.
- Can the INA231BIYFDR be configured for different conversion times and averaging modes?
