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
General-purpose op amps
MSP430 microcontrollers
Precision op amps (Vos<1mV)
Technical documentation
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Type | Title | Date | |
---|---|---|---|
* | Application note | High-side current-sensing circuit design with MSP430 smart analog combo (Rev. B) | Mar. 06, 2020 |
* | Application note | High-side current-sensing circuit design (Rev. A) | Feb. 13, 2019 |
E-book | Simplifying Current Sensing (Rev. A) | Jan. 09, 2020 | |
Application note | How to Use the Smart Analog Combo in MSP430™ MCUs (Rev. A) | Oct. 24, 2019 | |
Application note | Using An Op Amp for High-Side Current Sensing | Mar. 22, 2019 | |
E-book | Analog Engineer’s Circuit Cookbook: Amplifiers (Rev. A) | Feb. 18, 2019 | |
Application note | Difference amplifier (subtractor) circuit (Rev. A) | Jan. 31, 2019 | |
Application note | High-voltage, high-side floating current sensing circuit using current output, c | Jun. 28, 2018 | |
User guide | 10-uA to 100-mA 0.05%-Error High-Side Current Sensing Design Guide | Oct. 03, 2013 |
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