Current-sensing solutions
Achieve accurate and fast current sensing in every system
Quickly and accurately measure current for system protection, telemetry and closed-loop control
Whether you need to detect an overcurrent fault, improve system efficiency, or provide closed-loop feedback, our 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.
Browse products by category
Non-isolated current sensing
Common-mode voltage < supply voltage
Isolated current sensing
Shunt
Magnetic
4 key current-sensing design trends that are powering electrification
Learn about higher system voltages, increased system protection, telemetry monitoring and reduced form factors.
Why choose TI for your current-sensing system?
Enable industry-leading performance
Our high-accuracy devices with zero-drift architecture enable precise measurements and low drift over time and temperature for better system performance, efficiency and control.
Find the right solution for your system
From low-current sensing to high-voltage sensing, our extensive portfolio enables fast detection and accurate measurement for a wide range of current-sensing methods and applications.
Simplify your design
We make system design simpler by engineering devices that solve common design challenges, such as reducing board space, system calibration requirements and eliminating external protection circuitry.
Flexible current-sensing solutions for your design
Transferring current-measurement data across the isolation barrier
Isolated current sensing is used both for high- and low-side current sensing. When the common voltage is higher than what a current-sense or difference amplifier can handle, an isolated method might be a good option. Safety standards might also require galvanic isolation between the system and the conductor measuring the current. Other use cases include when the microprocessor or controller has a different ground plane than the current sensor, or if a noisy ground plane (which will propagate to the rest of the system) makes accurate measurements difficult.
Learn more about these key isolated product categories:
Simplifying high-voltage sensing with Hall-effect current sensors
Design considerations for isolated current sensing
Accuracy Comparison of Isolated Shunt and Closed-Loop Current Sensing
Featured products for isolated
Measuring current in a power rail before a load or remainder of the circuit
In high-side current sensing, placing a shunt resistor between the bus voltage and the system load eliminates ground disturbances because the shunt resistor is no longer connected directly to ground. High-side current sensing also detects load short-to-ground conditions. We offer many devices with high-voltage capabilities and a high common-mode rejection ratio (CMRR) that accurately measure current on high-voltage rails.
Learn more about these key high-side product categories:
Bringing design simplicity, low drift and small size to integrated-shunt solutions
Precision Current Measurements on High-Voltage Power-Supply Rails (Rev. F)
Using An Op Amp for High-Side Current Sensing (Rev. A)
Featured products for high-side current sensing
Measuring current in the return path to ground
Low-side current sensing has a shunt resistor in between the load and ground. One advantage of low-side measurements is that the common-mode voltage is near zero. The disadvantage is that the voltage drop across the shunt resistor appears as a difference between the supply ground and the load or system ground. We offer a wide range of amplifiers that enable low-side sensing in high-accuracy and cost-sensitive applications.
Learn more about these key low-side product categories:
Do I need more slew rate or bandwidth in my high-speed, low-side current shunt mea
Low-Side Current Sense Circuit Integration
Single-supply, low-side, unidirectional current-sensing circuit
Featured products for low-side current sensing
In-line current sensing for fast switching common-mode transient voltages (dv/dt)
In-line current sensing offers true phase-current measurements for optimizing the quality of inverter or motor feedback information for closed-loop control. In such applications, the common-mode voltage is a pulse-width-modulated (PWM) signal, which disrupts the output signal (unless PWM rejection circuitry is enabled) and leads to more strenuous requirements for the current-sense amplifier, which must have a very good DC and AC common-mode rejection ratio (CMRR). We offer devices with both enhanced PWM rejection and high CMRR.
Learn more about these key in-line product categories:
High-Side Drive, High-Side Solenoid Monitor With PWM Rejection (Rev. D)
Current Sensing in an H-Bridge (Rev. D)
Low-Drift, Precision, In-Line Motor Current Measurements With PWM Rejection (Rev. D)
Featured products for inline
Current sensing for fast alerts or out-of-range conditions
Overcurrent protection is the most basic form of current monitoring for fast detection of out-of-range or fault conditions. Our portfolio includes high-bandwidth and slew-rate devices, as well as integrated comparator/alert devices for fast throughput to enable this safety feature.
Learn more about these key overcurrent protection product categories:
Over-Current Detection Products Brochure
Overcurrent Sensing Techniques
Isolated Overcurrent Protection Circuit
Featured products for overcurrent protection
Low current measurements in submilliamperes
A low-input bias current sensor is necessary to minimize errors when measuring low currents. With standard amplifier input bias currents, the bias current will exceed the measurement current, resulting in diminished accuracy and a low signal-to-noise ratio. We offer amplifiers with nanoampere input bias currents to enable high-accuracy submilliampere measurements.
Learn more about these key submilliampere product categories: