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CIRCUIT060005

High-side current sensing with discrete difference amplifier circuit

CIRCUIT060005

Overview

This single–supply, high–side, low–cost current sensing solution detects load current between 50mA and 1A and converters it to an output voltage from 0.25V to 5V. High–side sensing allows for the system to identify ground shorts and does not create a ground disturbance on the load.
Features
  • Single 36V supply 
  • Input: 50mA to 1A 
  • Output: 0.25V to 5V
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Technical documentation

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Type Title Date
Circuit design High-side current-sensing circuit design with MSP430 smart analog combo (Rev. C) PDF | HTML Oct 8, 2024
Circuit design High-voltage, high-side floating current sensing circuit using current output, c (Rev. A) PDF | HTML Sep 26, 2024
Circuit design High-side current-sensing circuit design (Rev. B) PDF | HTML Sep 25, 2024
E-book Analog Engineer’s Circuit Cookbook: Amplifiers (Rev. D) PDF | HTML Sep 24, 2024
E-book An Engineer's Guide to Current Sensing (Rev. B) Apr 12, 2022
Application brief Using An Op Amp for High-Side Current Sensing (Rev. A) PDF | HTML Dec 7, 2021
Application note How to Use the Smart Analog Combo in MSP430™ MCUs (Rev. A) PDF | HTML Oct 24, 2019
Circuit design Difference amplifier (subtractor) circuit (Rev. A) PDF | HTML Jan 31, 2019
User guide 10-uA to 100-mA 0.05%-Error High-Side Current Sensing Design Guide Oct 3, 2013

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