SCEA147 September   2024 TXB0104 , TXB0302 , TXB0304

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2TXB-Type Architecture Differences
    1. 2.1 TXB0104 and TXB0304 Comparison
    2. 2.2 Recommended Device Selection
  6. 3Common Design Challenges
    1. 3.1 Distributed Load (Transmission Line Effect)
      1. 3.1.1 Cable Length Impact - Bench Findings
    2. 3.2 Impedance Matching
      1. 3.2.1 Bench Setup and Results
    3. 3.3 Lumped Load
  7. 4Case Study
  8. 5Summary
  9. 6References

3.2 Impedance Matching

While reducing cable length helps reduce oscillations, there are also impedance matching techniques that can be used to dampen ringing or overshoots furthermore. System designers are recommended to implement series termination resistors at the output drivers of the TXB0304 to closely match the output to the transmission line.

Impedance Matching with External Series ResistorFigure 3-5 Impedance Matching with External Series Resistor
Equation 1. ZO+ZS= ZL