SCDA036A May   2022  – June 2024 TMUX8212 , TMUXS7614D

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. Size Requirement
    1. 1.1 Optimized Layout and Control
  5. Reliability Over Time
  6. Power Consumption
  7. Switching Speed and Hot Switching
  8. Signal Isolation
  9. Capacitance
  10. On-Resistance and Flatness
  11. Leakage Current
  12. Integrated Protection
  13. 10Latch-up Immunity
  14. 11Galvanic Isolation
  15. 12Conclusion
  16. 13References
  17. 14Revision History

On-Resistance and Flatness

One disadvantage many multiplexer devices have is On-Resistance. Because of the architecture of many multiplexer devices, the On-Resistance can vary significantly across bias voltage. This can result in large distortions on the output. However, TI’s Flat On-Resistance family of multiplexers address this issue. These devices keep the On-Resistance flat across a wide bias range. As a result, the performance is more comparable to a Photorelay or mechanical relay. This Flat On-Resistance has significant benefits to system performance, reducing THD and ensuring signal integrity. These Flat On-Resistance multiplexers have extremely low distortion and bridge the performance gap to photorelays. An example of one of these TI multiplexers is the TMUX821x.

 On-Resistance of a Mechanical
                    Relay, Photorelay, conventional Multiplexer, and TI’s Flat Ron Multiplexer Figure 7-1 On-Resistance of a Mechanical Relay, Photorelay, conventional Multiplexer, and TI’s Flat Ron Multiplexer