Ready to Start Your Signal Integrity Analysis?
Contact AEi Systems today for a free consultation or quotation.In modern high-speed designs, even small signal distortions can cause big reliability problems. Fast edge rates, dense routing, and complex ICs make it easy for overshoot, ringing, or crosstalk to creep in unnoticed. Signal Integrity (SI) Analysis validates that your signals transition cleanly, meet logic thresholds, and maintain timing margins across every operating condition.
Benefits of SI Analysis
AEi Systems uses Logic Command software and advanced simulation tools to analyze digital communication paths quickly and accurately. Every critical net — from clocks to data lines — is evaluated to ensure monotonic transitions and noise margins that hold for the life of the mission.
We assess:
- Characteristic impedance and propagation delays of PCB traces
- Package and die parasitics
- Via inductance and input capacitance
- IBIS model performance (slow/typical/fast corners)
- Pin contact and interconnect effects
Why it's essential
Signal integrity isn't guesswork. Real-world performance depends on how your interconnects, package, PCB planes, and vias behave with ultra-fast edges. Detailed analysis uncovers the latent risks:
- Characteristic impedance mismatches, parasitics, and reflections
- DC interface incompatibility and fan-out issues
- Crosstalk that shifts victim nets past error-prone thresholds
- Simultaneous switching outputs (SSO) creates ground-bounce and VDD-droop
- Board-level layout interacting with IC-level switching and package parasitics
Clean signals mean reliable systems - Signal Integrity Analysis keeps your data paths sharp, stable, and error-free.
What AEi Systems Delivers
- Comprehensive SI simulation and timing verification
- Crosstalk, logic compatibility, and decoupling analysis
- IBIS model integration and multi-corner validation
- Reports with timing plots, signal waveforms, and margin summaries
- Seamless correlation with Power Integrity and Worst Case Circuit Analysis
Signal Integrity issues rarely announce themselves - they hide until late in test or field deployment. By modeling parasitics, verifying timing, and analyzing crosstalk early, AEi Systems ensures your design communicates cleanly, reliably, and within spec from the first board spin.
Core Analysis
DC Interface Compatibility
Ensures each interface meets voltage and timing requirements — for example, validating TTL outputs drive TTL-compatible inputs with correct fanout.
- Confirms driver/receiver logic levels
- Includes effects of clamp diodes, leakage, and supply noise
- Accounts for real package pin resistance and driver impedance
Decoupling Analysis
Verifies that local decoupling can suppress switching noise within acceptable limits for every IC.
- Evaluates switching current demands and simultaneous switching outputs (SSOs)
- Reviews each device's current, edge rate, and decoupling design
- Confirms layout guidelines and manufacturer recommendations are met
Worst Case Timing Analysis (WCTA)
Assesses board and device timing paths under worst case voltage, temperature, and process conditions using TimingDesigner.
- Examines both rising and falling edges for setup/hold violations
- Combines FPGA/ASIC static timing with measured board delays
- Highlights margin shortfalls visually through waveform plots
Crosstalk Analysis
Quantifies coupling between aggressor and victim traces across all signal pairs.
- Computes nominal and worst case crosstalk levels
- Models exact trace geometry, spacing, and layer stack
- Feeds results into DC compatibility margins for accurate noise budgeting
Free Download Example Signal Integrity Analysis Reports
Signal Integrity Analysis Report - SI, DC Compatibility, Timing, CT, Startup
DownloadLet's Talk
Every project has unique risk and reliability goals. AEi Systems supports WCCA for the Automotive, Space, Nuclear, Medical and other high reliability industries.
We are happy to discuss part tolerances, mission life, specifications, reliability, failure, radiation, and SDRL related questions along with any other project requirements.
Start a discussion about your program requirements.
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