High-side current sensing with discrete difference amplifier circuit
CIRCUIT060005
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Description & Features

Technical documentation

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Key Document

Description

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

Technical documentation
Application note (6)
Title Type Size (KB) Date
PDF 626 06 Mar 2020
PDF 440 24 Oct 2019
PDF 70 22 Mar 2019
PDF 128 13 Feb 2019
PDF 122 31 Jan 2019
PDF 308 28 Jun 2018
User guide (1)
Title Type Size (KB) Date
PDF 976 03 Oct 2013
E-book (2)
Title Type Size (KB) Date
PDF 3447 09 Jan 2020
PDF 11294 18 Feb 2019

Design tools & simulation (2)

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

TI Devices (6)

Part Number Name Product Family
MSP430FR2310  16MHz integrated analog microcontroller with 2KB FRAM, Op-Amp, TIA, Comparator w/ DAC, 10-bit ADC  Microcontrollers (MCU) 
MSP430FR2311  16MHz integrated analog microcontroller with 3.75KB FRAM, Op-Amp, TIA, Comparator w/ DAC, 10-bit ADC  Microcontrollers (MCU) 
MSP430FR2353  24MHz 105C integrated analog microcontroller with 16KB FRAM, Op-Amps/PGAs, 12-bit DACs, 12-bit ADC  Microcontrollers (MCU) 
MSP430FR2355  24MHz 105C integrated analog microcontroller with 32KB FRAM, Op-Amps/PGAs, 12-bit DACs, 12-bit ADC  Microcontrollers (MCU) 
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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