Current-sense amplifiers
Maximize your system with current sensing solutions for protection, feedback control & system monitoring
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Whether you need to detect an overcurrent fault for system diagnostics, improve system power efficiency, or provide closed-loop feedback, our portfolio of current sense amplifiers delivers industry-leading current sensing accuracy across a broad range of common mode voltages and temperatures for any current sensing application without sacrificing cost and size.
Benefits of our current sensing amplifiers
Low-drift architecture
Achieve low drift over a wide temperature range with our zero-drift architecture and precision matched, integrated gain resistors.
High accuracy
Increase overall system performance and efficiency with higher accuracy due to low input offset and low gain error, enabling lower ohmic shunts and minimizing power dissipation.
Wide common-mode input range
Measure common-mode voltages beyond your amplifier’s supply voltage rail (from 120 V to -22 V) to address high-voltage system needs, like batteries in electric vehicles and motor-control systems.
Flexible current-sensing solutions for your design
Achieve accurate and fast current sensing in every system
Whether you need to detect an overcurrent fault, improve system efficiency, or provide closed-loop feedback, TI's large portfolio of current-sensing solutions enables industry-leading accuracy for a range of common-mode voltages and temperatures – without sacrificing system size, complexity or cost. Through decades of experience, we have developed leading-edge current-sensing technology that empowers engineers to achieve maximum system performance, power efficiency and reliability.
Learn more about our key product categories for current sensing:
Learn more about many common and challenging functional circuits
Designers have various choices when creating precise current-measurement circuits for cost-effective applications. Read our e-book An Engineer’s Guide to Current Sensing to learn how to streamline the design process. The e-book discusses popular functional circuits and highlights our best devices for specific challenges. Additionally, it suggests alternative solutions for further circuit enhancements.
Download the e-book:
Technical resources
TI Precision Labs - Current sense amplifiers
Introduction to Current Sense Amplifiers
An Engineer's Guide to Current Sensing (Rev. B)
Discover featured applications
Optimize the performance and power efficiency of DC motor drives by using current-sense amplifiers
Precision current sensing enables real-time control with in-line phase monitoring in DC motor drives, servo motors and drone accessories to increase the level of control, safety and performance in motor drive systems.
Benefits:
- Less than 0.5% full-scale error over –40°C to +125°C temperature range.
- Support for up to 110-V common-mode voltage operation.
- In-line phase motor control with enhanced pulse-width-modulation rejection.
- High bandwidth and high slew rate enable fast out-of-range detection.
Featured resources
- TIDA-00909 – 48V/10A High Frequency PWM 3-Phase GaN Inverter Reference Design for High-Speed Drives
- TIDA-00913 – 48V 3-Phase Inverter with Shunt-based In-line Motor Phase Current Sensing Reference Design
- TIDA-00302 – Current Shunt Monitor with Transient Robustness Reference Design
- BOOSTXL-3PHGANINV – 48-V Three-Phase Inverter With Shunt-Based In-Line Motor Phase Current Sensing Evaluation Module
- CS-AMPLIFIER-ERROR-TOOL – Current sense amplifier comparison and error tool
- Current Sensing for Inline Motor-Control Applications – Application note
- Low-Drift, Precision, In-Line Motor Current Measurements With PWM Rejection (Rev. D) – Application brief
Precision current sensing enables increased power efficiency and real-time control in robotics systems
Design with precision current-sense amplifiers for real-time control in robotic systems with in-line phase monitoring in collaborative, industrial robots and mobile robots, increasing the level of control, safety and performance in robotics systems.
Benefits:
- Less than 0.5% full-scale error over –40°C to +125°C temperature range.
- Support for up to 110-V common-mode voltage operation.
- In-line phase motor control with enhanced pulse-width-modulation rejection.
- High bandwidth and high slew rate enable fast out-of-range detection.
Featured resources
- TIDA-00909 – 48V/10A High Frequency PWM 3-Phase GaN Inverter Reference Design for High-Speed Drives
- TIDA-00913 – 48V 3-Phase Inverter with Shunt-based In-line Motor Phase Current Sensing Reference Design
- TIDA-00302 – Current Shunt Monitor with Transient Robustness Reference Design
- BOOSTXL-3PHGANINV – 48-V Three-Phase Inverter With Shunt-Based In-Line Motor Phase Current Sensing Evaluation Module
- Current Sensing for Inline Motor-Control Applications – Application note
- Low-Drift, Precision, In-Line Motor Current Measurements With PWM Rejection (Rev. D) – Application brief
- CS-AMPLIFIER-ERROR-TOOL – Current sense amplifier comparison and error tool
- ASC-STUDIO – Analog signal chain (ASC) studio
Precisely monitor current in solar-powered systems to ensure proper operation and maximum conversion efficiency
In solar-powered systems, precise monitoring of current and the use of maximum power-point tracking in DC/DC converters and other subsystems enables system optimization to ensure maximum efficiency and performance.
Benefits:
- Less than 0.5% full-scale error over –40°C to +125°C temperature range.
- Support for up to 110-V common-mode voltage operation.
- High bandwidth and high slew rate enable fast out-of-range detection.
Featured resources
- TIDA-01598 – Low Side, High Bandwidth Current Amp and Fault Detection for Solar Inverters Reference Design
- TIDA-010042 – 400-W GaN-based MPPT charge controller and power optimizer reference design
- TIDA-00332 – High Voltage 12 V – 400 V DC Current Sense Reference Design
- CS-AMPLIFIER-ERROR-TOOL – Current sense amplifier comparison and error tool
Design & development resources
Current sense amplifier comparison and error tool
System configuration tool
CCStudio™ SysConfig is part of TI's extensive CCStudio™ development ecosystem and is a configuration tool that simplifies hardware and software configuration challenges to accelerate software development.
SysConfig provides an intuitive graphical user interface for configuring pins, peripherals, (...)
PSpice® for TI design and simulation tool
New products
AEC-Q100 qualified, 110V 75ARMS high-precision current-sense amplifier with enhanced PWM rejection
Approx. price (USD) 1ku | 1.263
AEC-Q100 40V 16-bit high-precision I²C output digital power monitor with 800-µΩ EZShunt™ Technology
Approx. price (USD) 1ku | 1.194
AEC-Q100 qualified, 110V 75ARMS ultraprecise current-sense amplifier with fast transient response
Approx. price (USD) 1ku | 1.38