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INA271AIDR

TIINA271AIDR

Texas Instruments
Current Monitor Regulator High-Side 8-SOIC
NRND5,207 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The INA271AIDR is a high-side voltage output current-shunt monitor that can sense drops across shunts at common-mode voltages from -16V to +80V. It operates from a single 2.7V to 18V supply and features a dedicated pin for external filtering to improve signal stability in noisy environments.

Why Choose This Part

The device offers a high common-mode range of -16V to +80V, allowing it to handle reverse battery conditions and inductive transients. Its integrated filtering capability and low 700uA quiescent current make it a robust choice for power-sensitive industrial designs.

Applications

Industrial Motor Control
Monitoring phase currents or DC bus current in motor drive systems where high common-mode voltages are present.
Battery Management Systems
Tracking charge and discharge cycles in high-voltage battery stacks for energy storage or electric mobility.
Telecom Power Supplies
High-side current sensing in 48V telecom infrastructure to monitor power distribution and detect overcurrent conditions.
Solar Inverters
Measuring output current from solar panels into charge controllers where wide input voltage swings occur.

Key Specifications

Accuracy +/-1%
Function Current Monitor
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Sensing Method High-Side
Voltage - Input -16V ~ 80V
Operating Temperature -40degC ~ 125degC
Supplier Device Package 8-SOIC

Getting Started

To evaluate this part, use a high-precision shunt resistor sized for your maximum expected current. Connect the VIN+ and VIN- pins across the shunt and utilize the buffer output for a low-pass filter by adding an external capacitor to the NC/Filter pin as described in the datasheet.

INA271 Family

Part NumberDifferenceStock
INA271AQDRQ1 QDRQ1 2,037

Also Consider

INA282AIDR TITexas Instruments - Offers a wider common-mode range up to 80V with higher gain for low-side and high-side sensing applications.
AD8210WYRZ-R7 Analog Devices - Provides high-bandwidth current sensing with excellent rejection of high-frequency common-mode noise.

Categories

Sensors > Current & Voltage Sensors Industrial & Automation > Industrial Sensors & Instrumentation Consumer Electronics > Battery Management