SLLA601 February   2023 ISOUSB211

 

  1.   Abstract
  2.   Trademarks
  3. 1Ground Loop Interference
    1. 1.1 Common Sources of Noise Coupling
  4. 2Why Isolation Helps
  5. 3Why ISOUSB211 Can Help
  6. 4EVM Setup and Noise Injection
  7. 5Summary
  8. 6References

4 EVM Setup and Noise Injection

The ISOUSB211DPEVM can be used to test the effects of ground loops on USB transmissions. The EVM features a typical ISOUSB211 application and includes an non-isolated port USB connection on the same PCB for comparison. A test configuration can be easily created by following the set up shown in #GUID-C4FA081A-90FB-4301-B797-080FBC940563. The VGDP in the diagram can be simulated in audio applications by a 10 VRMSsignal from a function generator connected to the GND1 and GND2 pins of the EVM.

Figure 4-1 ISOUSB211 Example Test Configuration