SCDA017A September   2019  – July 2024 BQ24392 , HD3SS212 , HD3SS213 , HD3SS214 , HD3SS215 , HD3SS3202 , HD3SS3212 , HD3SS3220 , HD3SS3411 , HD3SS460 , TMUXHS4212 , TS3DV642 , TS3USB221 , TS3USB221A , TS3USB221E , TS3USB30 , TS3USB3000 , TS3USB3031 , TS3USB30E , TS3USB31 , TS3USB31E , TS3USB3200 , TS5USBA224 , TS5USBC400 , TS5USBC402 , TS5USBC41 , TUSB1042I , TUSB542

 

  1.   1
  2.   Passive Mux Selection Based On Bandwidth > Ron
  3.   Trademarks
  4. 1Introduction
  5. 2Key Performance Parameters
    1. 2.1 On Resistance (RON) and RON Flatness
    2. 2.2 Bandwidth (BW)
    3. 2.3 Signal Harmornics and Distortion
  6. 3What is More Important for High-Speed Interface and Video Systems
    1. 3.1 Muxes for USB Systems
    2. 3.2 Muxes for High Speed Video Systems (HDMI, Displayport)
  7. 4Summary
  8. 5Revision History

4 Summary

Analog muxes are often given a bandwidth specification. This indicates that the mux does not pass all frequencies in a time-varying signal. Analog signals through this system are attenuated. System designers need to make trade-offs between specifications in order to achieve optimal performance for the target application. This application note provides a relative guide in terms of importance of RON and BW for high-speed interface and video systems.