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Current sense amplifiers (current shunt monitors) measure the current of a load by measuring the voltage drop across a sense element, typically a shunt resistor.

Benefits of current sense amplifiers

  • Unique input stage topology that allows the common mode voltage to exceed the supply voltage
  • Zero-drift architecture offers very low offset voltage (VOS) and low offset drift to enable very accurate, stable measurements over a wide temperature range.
  • Integrated precision gain resistor network enable improved accuracy via reduced gain error, lower gain drift and improved CMRR as well as a reduced footprint.
  • Accuracy performance enables use of a smaller value shunt resistor which in turn lowers power dissipated as well as board footprint
analog-output

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


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Digital output

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

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Digital output

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


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Integrated Shunt

Offers a low-drift, precision integrated sense element.



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Read about Current Sense Amplifiers

TI Designs
  • TIDA-00614 - 30A Range Bidirectional Current Shunt Monitor Reference Design
  • TIDA-00328 - 50 mA-20 A, Single-Supply, Low-Side or High-Side Current Sensing Solution
  • TIDA-00313 - -48V Telecom Current/Voltage/Power Sense with Isolation
  • TIPD156 - Low-Drift Bidirectional Single-Supply Low-Side Current Sensing Reference Design

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Getting Started with Current Sense Amplifiers:

Learn how to maximize the performance achieved when measuring current with a current sense amplifier. 15 short videos, each addressing a different topic.

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Current Sense Amplifiers Videos