Maximize your system with
current sense amplifiers

Current and power measurement for real-time system protection, feedback control and high-accuracy system monitoring

Analog Output

Integrate the full analog signal processing and provide a voltage or current output

Integrated comparator

Provides a simple ALERT signal when the load current exceeds a threshold

Power / Current Monitors

Integrate the full signal conditioning path and utilize a standard 2-wire digital interface

Integrated Shunt

Offers a low-drift, precision integrated sense element

Featured technical resources

TI TechNotes

TI Tech Notes

Browse current and power measurement use cases

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Online training series

Online training series

15 short videos to get started with current sense amplifiers

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Current sense amplifiers guide

Current sense amplifier guide

Featured TI Designs reference designs and current sense amplifier products

Download guide (PDF, 1.10MB)

Featured TI Designs reference designs


Three-phase, AC-current measurements using a current transformer

High-accuracy, wide-range AC current measurement for a three-phase motor

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Automotive precision eFuse

Demonstrates a replacement to the traditional fuse, offering higher accuracy overcurrent protection

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30A range, bidirectional current shunt monitor

Accurately measures current across a range of 30A on a bus that carries up to 36-V common mode voltage from -40°C to +85°C

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50mA-20A, single-supply, low-side or high-side current sensing

Achieve a wide-dynamic-range current-sensing solution with a current sense amplifier and overcurrent protection comparator

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-48V telecom current/voltage/ power sense with IF isolation

Accurately measure current, voltage and power on a bus that carries -48V; data is communicated using an I2C interface

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40V to 400V uni-directional current/voltage/power monitoring

Measure current, voltage and power on a bus as high as 400V using an I2C- or SMBUS-compatible interface

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TI TechNotes

Browse current and power measurement use cases. Each TI TechNote includes problem analysis, implementation options and related products.

TI TechNotes Download
High-Side Drive, High-Side Solenoid Monitor With PWM Rejections
A functional use case highlighting the improvements measuring current offers in solenoid control
Monitoring Current for Multiple Out-of-Range Conditions
A functional use case outlining solutions to identify and handle multiple failure conditions in a system
Precision, Low-Side Current Measurement
A review of the tradeoffs and advantages of current sense amplifiers in a low-side current measurements
INA199, INA210
Integrating the Current Sensing Resistor
An overview on layout, accuracy and stability improvements when integrating the current sense resistor
Bi-Directional, Low-Side Phase Current Sensing with Integrated Over-Current Detection
A functional use case illustrating configurations for motor protection using low-side current sensing
High Precision, Low-Drift In-Line Motor Current Measurements
A functional use case, targeted at motor applications, that outlines a range of solutions for measuring in-line phase current
Low-Drift, Low-Side Current Measurements for Three Phase Systems
A functional use case outlining possible configurations for measuring a motor's phase current, with a focus on low-side implementations
Measuring Current To Detect Out-of-Range Conditions
An overview of the reasons and benefits of having overcurrent protection as part of any system
INA300, INA301
Precision Current Measurement on High Voltage Power Rail
A review of the benefits of using a current sensing amplifier to measure on the high-side of the shunt resistor
High-Side Current Overcurrent Protection Monitoring
Current monitoring of the DC-Link supply rail for lower complexity motor design
Integrating the Current Sensing Signal Path
Understanding the benefits and trade-offs for the different types of current measurement approaches
INA210, INA226

TI's current sense amplifiers provide high-precision, low-cost current measurement and power measurement by amplifying the differential voltage drop across a shunt resistor from mA to 100s A. Current sense amplifiers, also called current shunt monitors, are specialized differential amplifiers with a precisely matched resistive gain network. Current sense amplifiers are used in systems to provide real-time overcurrent protection (OCP), monitor current and power to optimize system efficiency or provide current measurement for closed loop circuits.