Analog current-sense amplifiers
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Current sense amplifiers have unique front-end architectures that allow their inputs to see voltages that exceed supply. In addition, highly-matched, integrated resistors increase accuracy and stability over temperature while shrinking overall system size. Additionally, this accuracy allows for lower ohmic shunts and power dissipation. With our diverse portfolio of analog-output current sense amplifiers, you can meet your system's precision, drift, and voltage requirements.
Accuracy
Find devices with greater precision to minimize current measurement error
Common-mode voltage
Select the common-mode voltage requirement for your current sensing application.
Device features
Monitor and protect your current sensing application with additional features
Device packaging
Reduce your board space with a variety of current sense amplifier package options.
Technical Resources
TI Precision Labs - Current sense amplifiers
An Engineer's Guide to Current Sensing (Rev. B)
Current Sense Amplifiers (Rev. E)
Discover featured applications
Achieve high precision current measurements for tighter control with our current-sense amplifiers
Our current-sense amplifiers for ultra-precise applications enable a variety of measurements for low- or high-side sensing, with common-mode voltages up to 110-V operational and 120-V survivability.
Benefits:
- Less than 0.5% full-scale error
- Low input bias currents enable the measuring microamps of current
Featured resources
- CS-AMPLIFIER-ERROR-TOOL – Current sense amplifier comparison and error tool
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 slew rate enable fast out-of-range detection.
Featured resources
- PMP30693 – Supercapacitor backup power supply with current limit and active cell balancing reference design
- TIDA-050034 – Integrated power supply reference design for NXP i.MX 7D processor
- CS-AMPLIFIER-ERROR-TOOL – Current sense amplifier comparison and error tool
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
- CS-AMPLIFIER-ERROR-TOOL – Current sense amplifier comparison and error tool
- ASC-STUDIO – Analog signal chain (ASC) studio
Precision current sensing can help you optimize power efficiency in your DC/DC and onboard charging systems
Develop electric vehicle systems with our precision zero-drift current-sense amplifiers, which help you design smaller, more efficient bidirectional DC/DC converters and onboard chargers.
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
- CS-AMPLIFIER-ERROR-TOOL – Current sense amplifier comparison and error tool
- CIRCUIT060035 – Bidirectional current sensing with a window comparator circuit
Precision current sensing can help you optimize the efficiency of your active antenna systems and remote radio units
Precision current sensing optimizes power amplifier operation by enabling precision calibration through monitoring of the drain current. In addition, fast out-of-range detection helps protect the power amplifier stages.
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 supports high-side monitoring of power amplifier stages.
- High bandwidth and high slew rate enable fast out-of-range detection.
Featured resources
- CS-AMPLIFIER-ERROR-TOOL – Current sense amplifier comparison and error tool
Design & development resources
Current sense amplifier comparison and error tool
PSpice® for TI design and simulation tool
INA296x evaluation module for -5-V to 110-V 1.1-MHz current sense amplifier with 5-V/µs slew rate
INA296AEVM is a small module with five completely independent boards that can be broken off by the designer. Five schematically identical boards are available for each of the five gain variations of the INA296x with inputs up to 110-V common-mode and 10-A (onboard shunt) input capability.
Each board (...)