This document provides an introduction to Cadence Sigrity tools for signal and power integrity analysis. It outlines Sigrity's product offerings, which cover signal and power integrity from chip to board to package levels. It also describes Cadence Sigrity's model extraction and time domain verification capabilities. Model extraction replaces power distribution networks and signal channels with equivalent circuit models to enable faster circuit-based simulation. Time domain verification uses broadband SPICE simulation to analyze step/pulse response, TDR/TDT waveforms, and generate circuit models with enforced passivity.

1. 1
Introduction to Cadence Sigrity Tools
Jian Guan
Software Engineer
Cadence Sigrity R&D US
4/17/2018

2. 2
Outline
1. Motivation to Learn Sigrity Tools
2. Sigrity Products
3. Model Extraction
4. Time Domain Verification and Circuit Model Generation

3. 3
Motivation to Learn Sigrity Tools
1. Sigrity tools are widely used for SI/PI design and
analysis in the industry.
2. They are necessary skills for SI/PI engineers.
3. Products cover all the aspects of SI/PI design and
analysis.
4. Fast new features development, and excellent
customer supports.

4. 4
Sigrity Products
PowerSI
XtractIM
3D-EM
PowerDC
XcitePI
Chip Level Package Level Board Level
T2B
PowerSI
3D-EM
PowerDC
Broadband
Spice
SPEED2000
SystemSI
SPEED2000

5. 5
Objective: Perform time-domain simulation of
composite networks to determine timing
waveforms, noise response or eye diagram
Electromagnetic (EM) field based
system simulation
Pros:
1. Accurate in modeling
distributed circuit networks
2. Good at analyzing signal and
power integrity issues
Cons:
1. Very time-consuming
2. Inefficient to model multi-scale
structures
Circuit-based system simulation
Pro: Super fast simulation
Cons:
1. Not able to provide details in
distributed networks
2. Difficult to obtain circuit
models for distributed
networks
Model Extraction

6. 6
Model power distribution
network (PDN) and signal
channels by an equivalent
circuit Replace PDN and signal
channels with the
equivalent circuit
Perform time-domain
system simulation using
SPICE
Circuit-based system
simulation
Model Extraction
PowerSI
3D-EM
Broadband
Spice

7. 7
TD Verification & Circuit Model Generation
Broadband Spice
(1) Step/Pulse Response
(2) TDR/TDT
(3) Circuit Model Generation
(4) Passivity Enforcement

8. 8
Social Medias
 YouTube - Sigrity Tech Tips
https://www.youtube.com/playlist?list=PLYdInKVfi0KblE3evL5lzy6qkruGfU_N2
 Sigrity Blog
https://community.cadence.com/cadence_blogs_8/b/spi/
 LinkedIn: Allegro, Sigrity
https://www.linkedin.com/in/teamallegro/

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