Overview
The INA286AIDR is a high-accuracy, wide common-mode range, bi-directional current shunt monitor produced by Texas Instruments. This device is part of the INA28x family, which includes the INA282, INA283, INA284, INA285, and INA286. These voltage output current shunt monitors are designed to sense drops across shunts at common-mode voltages ranging from –14 V to +80 V, independent of the supply voltage. The INA286AIDR operates from a single +2.7-V to +18-V supply and is specified over an extended operating temperature range of –40°C to +125°C, making it suitable for a variety of industrial and automotive applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Offset Voltage, RTI | ±20 | ±70 | μV | |
| Offset Drift vs Temperature | ±0.3 | ±1.5 | μV/°C | |
| Common-Mode Input Range | –14 | 80 | V | |
| Common-Mode Rejection Ratio (CMRR) | 120 | 140 | dB | |
| Gain Error | ±0.4 | ±1.4 | % | |
| Gain Drift vs Temperature | 0.0008 | 0.005 | %/°C | |
| Quiescent Current | 600 | 900 | μA | |
| Operating Temperature Range | –40 | 125 | °C | |
| Package Type | SOIC-8 |
Key Features
- Wide Common-Mode Range: –14 V to +80 V, allowing for versatile use in various applications.
- Low Offset Voltage: ±20 µV, enabling accurate current sensing with minimal error.
- High CMRR: 140 dB, ensuring robust rejection of common-mode signals.
- High Accuracy: ±1.4% Gain Error (Max) and 0.3 µV/°C Offset Drift, providing reliable performance over temperature.
- Single Supply Operation: +2.7-V to +18-V supply, with a maximum quiescent current of 900 µA.
- Extended Operating Temperature Range: –40°C to +125°C, suitable for harsh environments.
- Available Gains: 100 V/V for the INA286, with other gains available in the INA28x family (50 V/V, 200 V/V, 500 V/V, 1000 V/V).
Applications
- Industrial Automation: Monitoring current in industrial control systems and motor drives.
- Automotive Systems: Current sensing in automotive battery management, motor control, and other high-reliability applications.
- Power Supplies and DC-DC Converters: Accurate current monitoring for power supply and DC-DC converter designs.
- Medical Devices: Precise current sensing in medical equipment where high accuracy and reliability are crucial.
Q & A
- What is the common-mode input range of the INA286AIDR?
The common-mode input range is from –14 V to +80 V.
- What is the maximum offset voltage of the INA286AIDR?
The maximum offset voltage is ±20 µV.
- What is the CMRR of the INA286AIDR?
The CMRR is 140 dB.
- What is the gain error of the INA286AIDR?
The gain error is ±1.4% (Max).
- What is the operating temperature range of the INA286AIDR?
The operating temperature range is –40°C to +125°C.
- What is the quiescent current of the INA286AIDR?
The quiescent current is a maximum of 900 µA.
- In what package types is the INA286AIDR available?
The INA286AIDR is available in SOIC-8 and VSSOP-8 packages.
- What are the available gains in the INA28x family?
The available gains are 50 V/V (INA282), 100 V/V (INA286), 200 V/V (INA283), 500 V/V (INA284), and 1000 V/V (INA285).
- What is the supply voltage range for the INA286AIDR?
The supply voltage range is +2.7 V to +18 V.
- Is the INA286AIDR suitable for high-temperature applications?
Yes, it is specified over an extended operating temperature range of –40°C to +125°C.
