Overview
The INA286AIDGKR is a high-accuracy, bi-directional current sense amplifier produced by Texas Instruments. It is part of the INA28x family, which includes devices such as the INA282, INA283, INA284, and INA285. This component is designed to sense drops across shunts at common-mode voltages ranging from –14 V to +80 V, independent of the supply voltage. The INA286AIDGKR operates from a single +2.7-V to +18-V supply and is available in an 8-pin VSSOP (DGK) package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | VSSOP (DGK) | - |
| Pins | 8 | - |
| Operating Temperature Range | –40 to 125 | °C |
| Common-Mode Range | –14 to 80 | V |
| Offset Voltage | ±20 | μV |
| CMRR | 140 | dB |
| Gain Error (Max) | ±1.4% | - |
| Offset Drift | 0.3 | μV/°C |
| Gain Drift (Max) | 0.005% | /°C |
| Quiescent Current (Max) | 900 | μA |
| Supply Voltage Range | +2.7 to +18 | V |
| Gain | 100 V/V | - |
Key Features
- Wide Common-Mode Range: The INA286AIDGKR can operate at common-mode voltages from –14 V to +80 V, making it suitable for a wide range of applications.
- High Accuracy: The device features a low offset voltage of ±20 μV and a gain error of ±1.4% (Max), ensuring high accuracy in current sensing.
- Zero-Drift Architecture: This architecture enables current sensing with maximum drops across the shunt as low as 10 mV full-scale.
- High CMRR: A common-mode rejection ratio (CMRR) of 140 dB helps in rejecting common-mode noise effectively.
- Low Drift: The device has a low offset drift of 0.3 μV/°C and a gain drift of 0.005%/°C (Max).
- Single Supply Operation: The INA286AIDGKR operates from a single +2.7-V to +18-V supply, drawing a maximum of 900 μA of supply current.
Applications
The INA286AIDGKR is ideal for various applications requiring high-accuracy current sensing, including:
- Automotive Systems: The wide common-mode range and high CMRR make it suitable for automotive fault conditions and other harsh environments.
- Industrial Automation: It can be used in industrial control systems, motor control, and power monitoring applications.
- Power Supplies and DC-DC Converters: The device is useful for monitoring current in power supplies and DC-DC converters.
- Medical Equipment: High accuracy and low drift make it suitable for medical devices requiring precise current measurement.
Q & A
- What is the common-mode range of the INA286AIDGKR?
The INA286AIDGKR has a common-mode range of –14 V to +80 V.
- What is the gain of the INA286AIDGKR?
The gain of the INA286AIDGKR is 100 V/V.
- What is the maximum quiescent current of the INA286AIDGKR?
The maximum quiescent current is 900 μA.
- What is the operating temperature range of the INA286AIDGKR?
The operating temperature range is –40°C to +125°C.
- What package types are available for the INA286AIDGKR?
The device is available in an 8-pin VSSOP (DGK) package.
- What is the offset voltage of the INA286AIDGKR?
The offset voltage is ±20 μV.
- What is the CMRR of the INA286AIDGKR?
The CMRR is 140 dB.
- How does the zero-drift architecture benefit the INA286AIDGKR?
The zero-drift architecture enables current sensing with maximum drops across the shunt as low as 10 mV full-scale and reduces drift over temperature.
- What are some typical applications of the INA286AIDGKR?
Typical applications include automotive systems, industrial automation, power supplies, and medical equipment.
- What is the supply voltage range for the INA286AIDGKR?
The supply voltage range is +2.7 V to +18 V.
