Amplifiers

Maximize your system with current sense amplifiers

Current sensing solutions for protection, feedback control and 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

Current / voltage / power 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 products

INA190

40V, Bi-Directional, Low-/High-Side, Zero-Drift, Voltage Output Current Sense Amplifier w/ Low Bias Current and Enable

INA381

26V, Low-/High-Side, Voltage Output Current Sense Amplifier with Comparator

INA253

80V, Low-/High-Side, Bi-Directional, Current Sense Amplifier w/PWM Rejection & Precision Integrated Shunt Resistor

Featured TI Designs

Solar MPPT Charge Controller

20A MPPT solar charge controller created for solar panel inputs corresponding to 12V and 24V panels

Automotive USB Charger with Linear Droop Compensation Reference Design

Provides detailed data for evaluating and verifying a USB charger

-48V Telecom Current/Voltage/Power Sense with Isolation

Ability to report current, voltage and power on a bus that carries -48V

Leakage Current Measurement for Determining Insulation Resistance

A reference solution to measure Insulation Resistance up to 100MΩ

24W Boost and Boost-to-Battery Reference Design for Automotive LED Lighting

24W, high-efficiency (94%), low cost, Asynchronous boost design for automotive LED applications

Featured technical resources

Browse TI's library of training videos and get started with current sense amplifiers

Featured TI Designs reference designs and current sense amplifier products

Search part numbers from any supplier and find comparable TI devices

Application notes

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

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General Current & Power Monitoring Challenges

Application notes
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Devices
Measuring Current To Detect Out-of-Range Conditions PDF

INA300

INA301

INA381

Monitoring Current for Multiple Out-of-Range Conditions PDF

INA302

INA303

Integrating the Current Sensing Signal Path PDF INA226
Integrating the Current Sensing Resistor PDF

INA250

INA253

INA260

Improve Shunt Layout with Integrated Current Sense Resistor PDF

INA250

INA253

INA260

Integrated, Current Sensing Analog-to-Digital Converter PDF INA226
Op-Amp Current Sense Circuit Integration PDF INA180
Discrete Current Sensing vs. SOC Integrated Current Sensing Function PDF INA199
Energy & Power Monitoring
PDF INA233
Digital Interface for Power Monitors PDF

INA226

INA233

Precision, Low-Side Current Measurement PDF INA199
Precision Current Measurement on High-Voltage Power Supply Rails PDF INA190
Common Uses for Multi-Channel Current Monitoring PDF

INA2180

INA2181

INA4180

INA4181

Low Temperature Drift Integrated Shunt vs. Active Temperature Compensation of Shunt PDF

INA250

INA253

INA260

High Voltage (100V+) Current & Power Monitoring Specific Challenges

Application notes
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Devices
Extend Common-mode Range for High Voltage Applications PDF

INA168

INA226

Design Considerations for Dual DRV425 Bus Bar Application PDF DRV425

Motor/Solenoid Specific Challenges

Application notes
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Devices
High Precision, Low-Drift In-Line Motor Current Measurements PDF

INA240

INA253

Low-Drift, Low-Side Current Measurements for Three Phase Systems PDF INA301
High-Side DC-Link Motor Current Monitoring for Over-Current Protection PDF INA240
High-Side Drive, High-Side Solenoid Monitor With PWM Rejection PDF

INA240

INA253

Bi-Directional, Low-Side Phase Current Sensing with Integrated Over-Current Detection PDF

INA302

INA303

Bi-Directional Current Measurement in H-Bridge PDF INA240
Benefits of Low Inductive Shunt for Current Sensing in PWM Applications PDF

INA240

INA253

End Equipment Specific Challenges

Application notes
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Devices
Current Measurements for Switching Power Supply PDF INA240
Current Sensing In Current Mode Control Power Supply PDF INA240
Precision Brightness and Color Mixing in LED Lighting Using Discrete Current Sense Amplifiers PDF INA240
Protection for Discrete Digital Outputs in PLC Systems PDF INA240
Current Sense Amplifiers in Class-D Audio Subsystems PDF INA240