SNOAA88 June   2022 LDC3114 , LDC3114-Q1

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
    1. 1.1 Inductive Sensing
    2. 1.2 EMI
  4. 2CISPR 25 Requirements
    1. 2.1 Radiated EMI Testing
      1. 2.1.1 Test Setup
      2. 2.1.2 Test Results
    2. 2.2 Conducted EMI Testing
      1. 2.2.1 Test Setup
      2. 2.2.2 Test Results
  5. 3Summary
  6. 4References

EMI

When an electronic system or device resides in a harsh and noisy environment, electromagnetic interference (EMI) can occur, disrupting system level functions or causing a product to fail electromagnetic compatibility (EMC) testing. EMI is essentially any unwanted radiated or conducted electrical signals that negatively affect the performance of a system or device. Due to the increasing number of radiating wireless devices, it is vital to ensure EMC and adhere to its standards. Many applications require CISPR testing to be done on their systems to ensure that the product meets FCC standards for EMI and EMC. The level of CISPR testing required varies per application and should be tested on a system level. This application note covers an example test setup using the LDC3114 along with different coil designs to showcase the EMI performance of the device.