High-side current sensing with discrete difference amplifier circuit CIRCUIT060005 (ACTIVE)

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Key Document


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.

  • Single 36V supply 
  • Input: 50mA to 1A 
  • Output: 0.25V to 5V

Technical Documents
Application notes (4)
Title Type Size (KB) Date
PDF 70 22 Mar 2019
PDF 128 13 Feb 2019
PDF 122 31 Jan 2019
PDF 308 28 Jun 2018
User guides (1)
Title Type Size (KB) Date
PDF 976 03 Oct 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

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 (2)

Part Number Name Product Family
OPA192  High-Voltage, Rail-to-Rail Input/Output, 5µV, 0.2µV/˚C, Precision Operational Amplifier  Operational amplifiers (op amps) 
OPA2990  40-V, dual 1MHz, rail-to-rail input/output, low-offset-voltage, low-power op amp  Operational amplifiers (op amps) 

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