Current Sense Amplifier Calculator Tool

Welcome to our Current Sense Amplifier Calculator. This tool has been designed to simplify the process of creating current sensing circuits.

This calculator will help you figure out the correct: 

  • Shunt values 
  • Amplifier settings
  • Output measurements 
  • ADC dynamics
  • Max current 
  • Shunt power 

Think of it as your personal guide through the maze of current sensing: just fill in the details, and it'll give you all the numbers you need to make your circuit accurate and efficient.

Simplify your design process today - try our Current Sense Amplifier Calculator now and get your project on the right track!

Supplier overview

STMicroelectronics Current Sense Amplifiers

See the complete current sense amplifier offering from STMicroelectronics, including full product lists and application tables.

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Calculator tool

Parameter CSA calculator Unit
Shunt value
CSA gain V/V
Output
ADC dynamic V
Max current A
Shunt power

 

Used formulae

Field name Unit Formula Description
Shunt value mOhm Shunt value = mv per amp / CSA gain Value of the series shunt resistor in mohm
CSA gain V/V CSA gain=mv per amp/shunt value Gain of the current sense amplifier
Output (mV per amp) mV mv per amp = shunt value * CSA gain Current sense output voltage at 1A input current
ADC dynamic V ADC dynamic = (mv per amp / 1000) * max current Maximum input voltage at the ADC stage
Max current A Max current = ADC dynamic / (mv per amp/1000) Maximum sensing current
Shunt power mW Shunt power = (max current^2) * shunt value Maximum power dissipation on the series shunt resistor

CSA Calculator Diagram 

CSA Calculator Diagram