INA271AIDR

Current Regulation/Management Overview

The INA271AIDR is a high-speed, voltage-output current shunt monitor manufactured by Texas Instruments. It supports both low-side and high-side measurements with a common-mode input voltage range of -16V to 80V. The device features a fixed gain of 20 V/V and operates on a single supply voltage from 2.7V to 18V. It offers a bandwidth of 130kHz and includes simplified filter inputs for noise reduction. The component is housed in an 8-SOIC package and functions within a temperature range of -40°C to 125°C.

Current Regulation/Management Feature Summary

• Supports unidirectional current measurement via external shunt resistors
• Enables monitoring in both low-side and high-side configurations
• Provides simplified filter inputs to reduce output noise
• Delivers rail-to-rail voltage output proportional to sensed current

Current Regulation/Management Applications

• Industrial process control systems
• Power supply current monitoring
• Overcurrent protection circuits
• Battery management systems

Current Regulation/Management Procurement Notes

Verify the specific suffix 'IDR' corresponds to the tape-and-reel packaging format when ordering. Confirm that the fixed 20 V/V gain aligns with system requirements, as other variants may offer different gains. Ensure the -16V to 80V common-mode range covers the maximum expected bus voltage in the application design.

Current Regulation/Management Selection Notes

Select this component when a high-speed response and wide common-mode voltage range are required for current sensing. It is suitable for applications needing precise voltage output without additional signal conditioning. Consider the 130kHz bandwidth for dynamic load monitoring. Verify compatibility with the 8-SOIC footprint during PCB layout.

Current Regulation/Management Part Context

The INA271 belongs to the INA27x family of current shunt monitors designed for precision measurement. It complements similar devices like the INA270, which shares architectural similarities but may differ in specific performance metrics or gain options. The series is widely used in industrial and automotive electronics for reliable current tracking.

Current Regulation/Management Replacement Considerations

• INA271AIDRG4

Current Regulation/Management FAQ

What is the fixed gain of the INA271AIDR?

The INA271AIDR has a fixed internal gain of 20 V/V.

Can the INA271AIDR measure negative currents?

No, it is a unidirectional current shunt monitor designed for positive current flow relative to the shunt resistor.