Overview
The INA231AIYFDR is a high-performance, 28-V, 16-bit current and power monitor produced by Texas Instruments. This device is designed for precise measurement of current, voltage, and power in various applications. It features a 1.8-V compliant I2C interface and is capable of bidirectional current measurement. The INA231AIYFDR is powered by a single supply voltage ranging from 2.7 V to 5.5 V and operates over a temperature range of -40°C to 125°C. It is particularly useful in systems requiring accurate and reliable current and power monitoring.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | INA231AIYFDR |
| Package Type | DSBGA-12 |
| Package Size | 1.65 mm x 1.39 mm x 0.40 mm |
| Bandwidth | 3.5 kHz |
| CMRR (Min) | 100 dB |
| Common Mode Voltage (Max) | 28 V |
| Digital Interface | I2C |
| Gain | 1 V/V |
| Gain Error | 0.5 % |
| Gain Error Drift (Max) | 50 ppm/°C |
| Input Offset (+/-) (Max) | 50 uV |
| Input Offset Drift (+/-) (Max) | 0.1 uV/°C |
| Iq (Max) | 0.42 mA |
| Operating Temperature Range | -40°C to 125°C |
| Supply Voltage (Min/Max) | 2.7 V / 5.5 V |
Key Features
- Bidirectional Current Measurement: The INA231AIYFDR can measure current in both directions, making it versatile for various applications.
- High Accuracy: Features a gain error of 0.5% and an input offset of 50 uV, ensuring high accuracy in measurements.
- I2C Interface: Supports a 1.8-V compliant I2C interface for easy communication with the host system.
- Alert Function: Includes an ALERT pin that can be programmed to respond to various events such as shunt voltage overlimit, bus voltage overlimit, and power overlimit.
- Low-Side and High-Side Measurement: Capable of measuring current on both the low-side and high-side of the shunt resistor.
- Programmable Registers: Allows flexible configuration for measurement resolution and operating modes (continuous or triggered).
- Power-Down Mode: Reduces quiescent current to minimize power consumption when not in use.
Applications
- Power Supplies and DC-DC Converters: Ideal for monitoring current and power in power supply units and DC-DC converters.
- Industrial Automation: Used in industrial control systems to monitor and manage power consumption and current flow.
- Aerospace and Defense: Suitable for high-reliability applications in aerospace and defense due to its robust specifications and wide operating temperature range.
- Automotive Systems: Employed in automotive systems for battery management, motor control, and other power monitoring applications.
- Server and Data Center Power Management: Helps in monitoring and managing power consumption in server and data center environments.
Q & A
- What is the operating temperature range of the INA231AIYFDR?
The INA231AIYFDR operates over a temperature range of -40°C to 125°C.
- What is the maximum common mode voltage for the INA231AIYFDR?
The maximum common mode voltage is 28 V.
- What type of digital interface does the INA231AIYFDR use?
The INA231AIYFDR uses a 1.8-V compliant I2C interface.
- Can the INA231AIYFDR measure current in both directions?
Yes, the INA231AIYFDR is capable of bidirectional current measurement.
- What is the gain error of the INA231AIYFDR?
The gain error is 0.5%).
- How does the ALERT pin function in the INA231AIYFDR?
The ALERT pin can be programmed to respond to various events such as shunt voltage overlimit, bus voltage overlimit, and power overlimit).
- What are the supply voltage ranges for the INA231AIYFDR?
The supply voltage ranges from 2.7 V to 5.5 V).
- Does the INA231AIYFDR have a power-down mode?
Yes, the INA231AIYFDR has a power-down mode that reduces quiescent current to minimize power consumption when not in use).
- What is the typical supply current of the INA231AIYFDR?
The typical supply current is 330 μA).
- Is the INA231AIYFDR RoHS compliant?
Yes, the INA231AIYFDR is RoHS compliant).
