Power Supply Noise Effects on Jitter in Clock Synchronous Systems with Emphasis on Memory Interfaces White Paper

The “Power Supply Noise Effects on Jitter for Memory Interfaces” white paper examines how power supply fluctuations translate into timing jitter in high‑speed, clock‑synchronous memory systems. As DDR, LPDDR, and HBM interfaces operate at increasingly higher data rates, power‑supply‑induced delay variation becomes a critical limiter of system timing margins. This paper explains the underlying mechanisms of power‑supply‑induced jitter and presents modeling techniques that help designers analyze, predict, and mitigate its impact on memory interface performance, reliability, and efficiency.

What You Will Learn:

• How clock and data path imbalance allows power‑supply‑induced jitter to accumulate in source‑synchronous memory interfaces
• How jitter transfer functions (JTFs) can be used to model the relationship between supply noise frequency and timing jitter
• How relative jitter between clock, strobe, and data paths directly impacts DDR read and write timing margins