Overview
The INA282AIDGKR is a High/Low Side Bidirectional Current Shunt Sensor IC from Texas Instruments (TI). This component is designed to measure input current that passes through an external shunt resistor and outputs a proportional analog voltage. The INA282 is part of the INA28x series, which includes various gain options, but the INA282 specifically has a fixed gain of 50 V/V.
The IC is available in two package types: SOIC-8 and VSSOP-8, making it versatile for different design requirements. It operates with a supply voltage range of 2.7V to 18V DC and can handle load power supplies from -14V to +80V, independent of the IC's power supply.
Key Specifications
| Feature | Description |
|---|---|
| IC Info | INA282 High/Low Side Bidirectional Current Shunt Monitor from Texas Instruments (TI) |
| Input Voltage Range | -14V to +80V |
| Output Voltage | VOUT = (50 V/V)·IS·RS |
| Gain | 50 V/V |
| Offset Voltage | ±20μV (typical), ±70μV (max) |
| Bandwidth | 10kHz (typical) |
| Operating Voltage | +2.7V to +18V DC |
| Quiescent Current | 600μA (typical), 900μA (max) |
| Operating Temperature | -40°C to +125°C |
| Package | SOIC-8 or VSSOP-8 |
Key Features
- High/Low Side Current Sensing: The INA282 can measure current on both the high and low sides of the shunt resistor.
- Bidirectional Current Measurement: Capable of measuring both positive and negative currents.
- Wide Common-Mode Input Range: Handles input voltages from -14V to +80V.
- Fixed Gain: Outputs a proportional analog voltage with a fixed gain of 50 V/V.
- Zero-Drift Topology: Ensures high-precision measurements with low offset voltages.
- Reference Voltage Configuration: Allows for ground-referenced, V+ referenced, and bidirectional operation configurations.
Applications
- Industrial Automation: Monitoring current in industrial control systems and motor drives.
- Automotive Systems: Current sensing in automotive battery management and power distribution systems.
- Power Supplies and DC-DC Converters: Real-time current monitoring to ensure efficient and safe operation.
- Medical Devices: Precise current measurement in medical equipment and diagnostic tools.
- Consumer Electronics: Current sensing in power management circuits of consumer devices.
Q & A
- What is the gain of the INA282 IC?
The INA282 IC has a fixed gain of 50 V/V.
- What are the package options for the INA282 IC?
The INA282 IC is available in SOIC-8 and VSSOP-8 packages.
- What is the operating voltage range of the INA282 IC?
The operating voltage range is from +2.7V to +18V DC.
- Can the INA282 measure bidirectional currents?
- What is the common-mode input range of the INA282 IC?
The common-mode input range is from -14V to +80V.
- How does the reference voltage configuration work on the INA282?
The INA282 allows for ground-referenced, V+ referenced, and bidirectional operation configurations using the REF1 and REF2 pins.
- What is the quiescent current of the INA282 IC?
The quiescent current is 600μA (typical) and 900μA (max).
- What is the bandwidth of the INA282 IC?
The bandwidth is 10kHz (typical).
- What are the operating temperature limits of the INA282 IC?
The operating temperature range is from -40°C to +125°C.
- What is the purpose of the zero-drift topology in the INA282 IC?
The zero-drift topology enables high-precision measurements with low offset voltages.
