Real Jitter Visibility at Sub-Picosecond Accuracy

vJitter provides the sub-picosecond resolution required to analyze jitter at its true scale, delivering SPICE-accurate insight into how supply noise, power delivery variation, coupling, and distribution topology distort clock edges and introduce jitter.

It captures waveform-level behavior across the full clock domain and exposes jitter amplification, duty-cycle distortion, and instability that existing methodologies measure inaccurately.

With vHelm, designers can explore what-if scenarios and apply Virtual ECO adjustments with immediate waveform accuracy, making it possible to isolate and correct jitter at its source.

Teams gain precise jitter visibility that protects timing budgets, preserves shrinking margins, and ensures more predictable system performance as geometries advance.

Hidden Jitter Sources That Undermine Clock Stability

At advanced nodes, PLL jitter represents only a small portion of overall jitter.
Supply noise, IR drop, coupling, switching activity, and mesh interactions distort edges at multiple points along the clock path and erode timing margin cycle by cycle.

Existing methodologies rely on averaging or simplified assumptions that hide these interactions and cause jitter-driven failures to surface only after silicon.

vJitter exposes these noise-sensitive regions directly, showing how electrical variation shapes edge distortion and timing stability across the network.
This visibility allows designers to pinpoint jitter bottlenecks early and correct them well before sign-off.