Signal integrity signifies the signal’s ability to propagate without distortion. Signal integrity is nothing but the quality of the signal passing through a transmission line. Fundamentally, signal integrity issues must be taken care of during the PCB design phase. Once the board has been designed, there is little one can do to improve signal integrity.
A simple analogy for your understanding:
- AM signal -> not so clear (distorted signals)
- FM signal -> more clear (better signal integrity)
To be more descriptive, signal integrity is the measurement of the quality of an electrical signal typically in electronic printed circuit boards. In digital electronics, a stream of binary values is represented by a voltage (or current) waveform. However, digital signals are fundamentally analog in nature, and all signals are subject to effects such as noise, distortion and loss.
- Detecting impedance discontinuities
- What is crosstalk?
- What are reflections, ringing, overshoot, and undershoot?
- What is a via stub?