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CIRCUIT060001

Single-supply, low-side, unidirectional current-sensing circuit

CIRCUIT060001

Overview

This single–supply, low–side, current sensing solution accurately detects load current up to 1A and converts it to a voltage between 50mV and 4.9V. The input current range and output voltage range can be scaled as necessary and larger supplies can be used to accommodate larger swings.
Features
  • Senses Temperature between 25°C - 50°C 
  • Output: 0.05V - 3.25V 
  • Single 3.3V Supply with half-supply reference
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Technical documentation

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Type Title Date
Circuit design Single-supply low-side unidirectional current-sensing circuit with MSP430 SAC (Rev. B) PDF | HTML Oct 9, 2024
Circuit design Single-supply, low-side, unidirectional current-sensing circuit (Rev. A) PDF | HTML Sep 26, 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
Circuit design Low-Drift, Low-Side, Bidirectional Current Sensing Circuit (Rev. A) PDF | HTML Dec 2, 2020
Application note How to Use the Smart Analog Combo in MSP430™ MCUs (Rev. A) PDF | HTML Oct 24, 2019
Application brief Precision, Low-Side Current Measurement (Rev. B) Mar 6, 2019
Application brief Low-Side Current Sense Circuit Integration Mar 30, 2017
User guide 0-A to 1-A Single-Supply Low-Side Current-Sensing Solution Design Guide (Rev. B) Dec 11, 2015
Design guide +/-1A Single-Supply Low-Side Current Sensing Solution Design Guide Dec 8, 2014
User guide TIPD104 Design Reference Guide Sep 19, 2013

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