Single-supply, low-side, unidirectional current-sensing circuit CIRCUIT060001 (ACTIVE)

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Key Document


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.

  • Senses Temperature between 25°C - 50°C 
  • Output: 0.05V - 3.25V 
  • Single 3.3V Supply with half-supply reference

Technical Documents
Application notes (4)
Title Type Size (KB) Date
PDF 91 06 Mar 2019
PDF 189 30 Dec 2018
PDF 167 28 Jun 2018
PDF 176 30 Mar 2017
User guides (3)
Title Type Size (KB) Date
PDF 941 11 Dec 2015
PDF 723 08 Dec 2014
PDF 360 19 Sep 2013
Solution guides (1)
Title Type Size (KB) Date
PDF 11259 18 Feb 2019
More literature (1)
Title Type Size (KB) Date
PDF 4073 29 Nov 2018

Software (1)

Development Tools (2)

Name Part Number Tool Type
Analog engineer's calculator  ANALOG-ENGINEER-CALC  Calculation Tools 
SPICE-based analog simulation program  TINA-TI  Circuit Design & Simulation 

TI Devices (3)

Part Number Name Product Family
LPV821  650nA, Precision Zero-Drift Nanopower Amplifier  Operational amplifiers (op amps) 
OPA375  OPAx375, 500uV, 10-MHz, Low Broadband Noise, RRO, Operational Amplifier  Operational amplifiers (op amps) 
TLV9061  World's Smallest Amp 10MHz, RRIO, 1.8V-5.5V op-amp delivers high performance for challenging systems  Operational amplifiers (op amps) 

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