This STMicroelectronics tech days webinar covers current sensing design challenge for analog engineer thanks to short video. You will understand from basics current sense amplifier, each parameter of a datasheet, application study, and to choose the right current sensing and dimension it for your application.
CHAPTER 1
Getting started with current sensing
This video introduces current sensing based on a shunt solution and provides a first approach to understanding how it works and how it can be used.
CHAPTER 2
Current sensing configuration
This video introduces the key concepts behind high‑side and low‑side current sensing, as well as bidirectional and unidirectional configurations.
CHAPTER 3
Key parameters for choosing a current sensing device
This video introduces the first steps to help you choose the right current‑sensing solution for your application.
CHAPTER 4
Accuracy of current sensing
This video introduces the different error categories of a current sensing amplifier, that can impact measurement accuracy.
CHAPTER 5
Input offset voltage (Vio) and drift over temperature (∆𝑉io/∆𝑇)
This video introduces the first source of error acting as an offset, whose contribution is generally dominant when small currents must be measured. It focuses on the input voltage offset and its variation with temperature.
CHAPTER 6
Common-mode rejection ratio (CMRR)
This video introduces the first source of error acting as an offset, whose contribution is generally dominant when small currents must be measured. It focuses on the input voltage offset and its variation with temperature.
CHAPTER 7
Power-supply rejection ratio (SVR)
This video introduces the power supply rejection ratio, also called the SVR parameter, and its impact on measurement accuracy.
CHAPTER 8
Error source acting as a percentage
This video introduces the second error source, which acts as a percentage and is generally dominant when high current is measured. It presents errors related to the integrated gain and its linearity.
CHAPTER 9
Application-dependent error sources
This video introduces the third error source, which is linked to the application. It presents the input bias current and the shunt resistance.
CHAPTER 10
Error calculation methodology
This video introduces different calculation methods that take into account all parameters likely to degrade current measurement and estimate the total error.