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| Our Customers |
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Sigrity customers include worldwide, leading
companies in diverse technology markets, including computer,
semiconductor, graphics, networking, communications, and consumer
electronics.
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| Customer Success Stories |
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41. |
The Application
of IBIS-AMI Model Cascaded Simulation for 10 Gigabit
Repeater Serial Link Analysis
-- Zhengrong
Xu, Luyu Ma - Huawei; Lee Sledjeski, Nate Unger - TI; Ken
Willis, Haisan Wang - Sigrity; IBIS Summit November 2011
Repeaters are increasingly being used in
high-speed SerDes channels. This paper describes the
implications for simulation and technology solutions that
are now available to handle the use of repeaters. An
application example utilizing IBIS-AMI modeling techniques
in the simulation of a 10G channel shows the new approach.
Sigrity products referenced:
SystemSI.
Presentation
(PDF Format)
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40.
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AMI Simulation
with Error Correction to Enhance BER Performance
-- Xiaoqing
Dong, Geoffrey Zhang - Huawei Technologies; Adge Hawes -
IBM; Kumar Keshavan, Ken Willis, Zhangmin Zhong - Sigrity,
Inc.; DesignCon February 2011
Designers of high speed SerDes systems are
challenged to lower the Bit Error Rate (BER) of their designs.
Early simulation can play a key role in assessing system
feasibility and predicting performance margins. When
designs include SerDes IP from multiple suppliers,
IBIS-AMI models provide the needed interoperability.
This paper discusses identification of marginal serial links
that can bring down overall system performance and cases
where BER is not met. Error correction techniques for
end-to-end analysis are also discussed.
Sigrity products referenced:
SystemSI - Serial Link Analysis.
Paper
(PDF Format)
Presentation
(PDF Format)
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39. |
Package
Electrical Characterization Dependent Power and Signal
Integrity Simulation - Analysis of Microprocessor Systems
-- Om Mandhana
- Freescale Semiconductor; DesignCon
February 2011
Iterative package analysis flows are
increasing in prominence for those seeking robust system
level power and signal integrity assessments. This
approach requires accurate electrical characterization of
packages and boards along with accurate models of
microprocessor circuits. This paper discusses design
flow options and the factors to consider to maximize
accuracy with practical simulation run times. Sigrity products referenced:
PowerSI,
Broadband SPICE and
XtractIM.
Paper
(PDF Format)
Presentation
(PDF Format)
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38. |
Optimization for
10Gbps Serdes
-- Skipper
Liang, Delta
Networks, Inc.; Sigrity User Forum May 2010
There are immense challenges associated
with the design of the system profiled in this paper which
operates at 10.3125Gbps per lane and includes SerDes, XUAI
and PCIe. Pre- and post-layout analysis techniques are
used to assess the board and associated connectors.
Alternate scenarios are considered for PCB materials, via options,
connector choices, etc. Rapid board-level frequency
domain simulations enable S-parameter comparisons. The
results correlate well with 3D simulations.
Time domain simulations of the entire channel include AMI
models of transmitter and receiver behavior. Jitter
and overall performance assessment is used to assure the
design confirmed to specifications.
Sigrity products referenced:
Channel Designer and
PowerSI.
Presentation
(PDF Format)
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37. |
Application and Extraction of IC
Package Electrical Models for Support of Power and Signal Integrity Analysis
-- Om P. Mandhana, John
Burnett, Brad Brim, Sam Chitwood - Freescale, Inc. and Sigrity, Inc; DAC July 2009
Simulated system noise values differ greatly based on
the type of package model used and the conditions under which the models
are extracted. This DAC poster session material covers assessments
showing that broadband multi-segment models predict power and signal
integrity performance in a more realistic way than conventional models.
This makes it important to select the appropriate package model
type for the anticipated signal bandwidths.
Sigrity products referenced:
XtractIM.
Presentation
(PDF Format)
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36. |
Predicting Deterministic Jitter on Copper Interconnect
-- Leon Wu - Flextronics; Sigrity User Forum June 2, 2009
The presentation discusses various forms of
jitter and assesses the ability of a new channel analysis flow
to determine bit error rate (BER). Simulation efficiency and
accuracy were important considerations for the application which
required simulation of 10e15 bits.
S-parameter simulated data was correlated with VNA measurements.
Sigrity products referenced:
Channel Designer.
Presentation
(PDF Format)
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35. |
Mobile Package
Design and Simulations
-- Se-Ho
You - Samsung Electronics; Sigrity User Forum April 21, 2009
The opportunity to improve package performance
is significant for those with a well thought out design flow.
This presentation describes analysis performed on a PoP design
with the associated printed circuit board. SSO simulations were
performed on the DDR design using S-parameter data for the design
which includes a DDR memory interface. Efforts were made to
understand and improve power delivery performance. Results
included a 33% decrease in package inductance.
Sigrity products referenced:
PowerSI and
Broadband SPICE.
Presentation
(PDF Format)
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34. |
Broadband Methodology for Power Distribution
System Analysis of Chip, Package and Board for High-Speed IO Design
-- Hsing-Chou Hsu,
Jack Lin - Via Technologies, AzureWave Technologies and Sigrity,
Inc; DesignCon February 2009
This paper covers characterization utilizing frequency domain
impedance information to assess power delivery system coupling and the impact
this has on simultaneous switching effects for adjacent IO cells. A new method
for integrated simulation is discussed along with key enabling technologies that
enable the linking of broadband network parameter (BNP) information for chips,
packages and boards. The resulting simulations identify frequency dependent
issues and
support what-if assessment of decoupling strategies.
Sigrity products referenced:
PowerSI and
XcitePI.
Paper
(PDF Format)
Presentation (PDF Format)
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33. |
Time and Frequency Analysis of Signal Noise as a
Function of Power Noise and Vice Versa of a Microcontroller Plus its Packaging
-- Ekkehard Miersch, Mehmet Goekcen, Thomas
Steinecke - Infineon Technologies and EFM Consulting; DesignCon February 2009
The paper covers strategies for the assessment of signal and power
integrity effects in complex systems that include chip and system level structures.
Methods to determine current signatures are discussed along with frequency and time
domain co-simulation techniques. Simulation results enable accurate assessment of
distributed on-chip and package level decoupling capacitor implementations.
Simulation results are correlated with measured data.
Sigrity products referenced:
XcitePI,
SPEED2000 and
PowerSI.
Paper
(PDF Format)
Presentation (PDF Format)
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32. |
Analysis of Entire Power Distribution System of Chip, Package and Board for High Speed IO
-- Hsing-Chou Hsu, Jack Lin - AzureWave Technologies and Sigrity, Inc;
EPEP October 2008
Analysis issues and co-simulation techniques for chip, package and board designs are
compared to traditional approaches. Electrical interactions are identified and compared based using
the new flow. Total impedance along with simultaneous switching noise is discussed.
Sigrity products referenced:
XcitePI and
PowerSI.
Presentation
(PDF Format)
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31. |
CAE Flow in the Development of Digital Equipment
-- Motochiko Okano - Toshiba Corporation; September 2008
This paper discusses an overall system
level power integrity design flow and a specific approach that streamlines PCB decap
optimization. The flow utilized a chip PDN model in system
level simulations that assure performance compared to target impedance.
Sigrity products referenced:
OptimizePI and
SPEED2000.
Presentation
(PDF Format)
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30. |
Advanced Package Design
-- Ho-Jeong Lim
- Amkor Technology; September 2008
This paper covers layout considerations and an e-driven flow for single and
multi-die SiP packages. Important capabilities to simplify layout, assure electronic performance
and generate models are discussed. Sigrity products referenced:
UPD and
XtractIM.
Presentation
(PDF Format)
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29. |
MCP and 3D Package Design
-- Sang-Hyeon Lee - Amkor Technology, September 2008
This paper covers the need for advanced capabilities for package layout
designers such as bond wire handling, routing and complex metal fill. Sigrity products referenced:
UPD.
Presentation
(PDF Format)
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28. |
Low Cost DTV-SoC System Implementation Using
Integrated Signal Integrity Analysis
-- Tai-Sik Yang, Yong-Seok Kang, Tae-Lim Song, Yun Ra, Seok-Soo Lee,
Woo-Hyun PaiK C LG Electronics; EMC Asia-Pacific Symposium; May 2008
Analysis of signal integrity and power integrity is a vital part of
ensuring successful DTV package and board designs. Delivering designs that offer both
high performance and low cost implementations makes the challenge even more acute.
The design flow profiled in the paper provided important performance insights before
manufacturing and correlated very well with measured results.
Sigrity products referenced:
SPEED2000.
Paper
(PDF Format)
Presentation (PDF Format)
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27. |
An Optimized Cost / Performance Power Delivery System Design Using OptimizePI
-- Paul Chu - Inventec; May 2008
This paper describes the importance of power rail integrity for printed circuit board designs
and the role of decoupling capacitors in managing self and transfer impedance. Design flow specifics are discussed
along with the results achieved which included identification of a design scheme that offered a better impedance
profile at a lower cost. Results were verified in the time domain and measurements of power noise were made.
Sigrity products referenced: OptimizePI
Presentation (PDF Format)
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26. |
Power Integrity in System Design
-- Skipper Liang - Flextronics; May 2008
Power integrity concepts are covered in this paper along the relationship between power and signal
integrity. DC and AC analysis flows are discussed along with the actions to resolve problems.
DC issues relating to IR drop and current density are illustrated. AC design flow recommendations
in the paper begin in the frequency domain for extraction and spatial distribution analysis and
proceed to the time domain for confirmation that specifications for slew, overshoot and load are met.
Sigrity products referenced: PowerDC,
PowerSI and
SPEED2000.
Presentation (PDF Format)
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25. |
Power Distribution System, Co-Simulation of Chip, Package and Board
-- Jimmy Hsu - VIA; May 2008
This paper suggests the need for a new co-simulation analysis flow to enable design adjustments
among chip, package and board to positively impact power integrity and cost. A chip centric
analysis showed that co-simulation identified issues that could not be observed with analysis of
the IC power delivery system alone. Various on-chip decoupling strategies were assessed
along with multiple package and board decap schemes. Sigrity's Broadband Network Paramer (BNP)
format is mentioned as key enabling technology. Sigrity products referenced:
XcitePI,
CoDesign Studio
and PowerSI. .
Presentation (PDF Format)
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24. |
Application of Integral Analysis Technique to Determine Signal- and Power Integrity of Advanced Packages
-- Nebojsa Nenadovic, Ekkehard Miersch, Martin Versleijen, Sidina
Wane - NXP Semiconductor and EFM Consulting; EPEP October 2007
This paper and poster session covers the application of an integral analysis
technique for determining Signal Integrity (SI) and Power Integrity (PI) of complex and
advanced package solutions. A representative System-in-Package (SiP) product has been used
for the study of analysis methodology, tools and flow. The importance of maximizing simulation speed and accuracy is discussed and
results are correlated with measurements. Sigrity products referenced:
SPEED2000.
Paper
(PDF Format)
Poster (PDF Format)
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23. |
Study of Simultaneous
Switching Noise Reduction for Microprocessor Packages by
Application of High-K MIM Decoupling Capacitors
-- Om P.
Mandhana, Hector Sanchez, Joshua Seigel and Jonathan Burnett -
Freescale Corp.;
DesignCon February 2007
This paper describes the effect of using an on-die metal High-K metal-insulator
decoupling capacitor (on-die High-K MIM DECAP) in reducing simultaneous switching noise (SSN) for
microprocessor packages. DDR2 / DDR3 system level modeling and simulations are performed in both the time and
frequency domain. Studies of loop inductance, self and transfer impedance, peak noise are performed.
Voltages are assessed at the receiver and eye diagrams are used to review simultaneous switching.
Sigrity products referenced:
PowerSI and
SPEED2000.
Paper
(PDF Format)
Presentation (PDF Format)
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22. |
Packaging a Supercomputer in
PCI Express Form Factor
-- Mark
Bailey, Greg Edlund, Bob Morse, Ankur Parel - IBM Corp.;
DesignCon February 2007
This paper looks at the trade-offs between
power, cooling and performance involved in packaging the
Cell Broadband Engine, multi-core graphics processor, and
associated bridge chip on a PCI ExpressTM
card together with large amounts of memory. In particular,
it examines AC and DC power distribution over twenty
domains, PCI Express compliance, and timing specification
for a DDR2 interface. Simulation results were correlated to lab measurements.
Sigrity products referenced:
PowerDC and
PowerSI.
Paper
(PDF Format)
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21. |
Power Integrity Analysis of a
Microcontroller plus its Chip Package
-- Ekkehard
Miersch C EFM Consulting, Thomas Steinecke, Mehmet Goekcen C
Infineon Technologies; EMC Conference Zurich C Singapore
2006
Co-simulation of wire-bonded ICs plus chip
packages for power integrity analysis. Power integrity and EMI issues were assessed with chip
centric assessments that included co-simulation of package and board structures.
Electromagnetic interactions inside planar package structures identified issues that would
not have been observable with chip analysis alone. Simulated data was correlated with lab
measurements. Sigrity products referenced:
XcitePI.
Paper
(PDF Format)
Presentation (PDF Format)
|
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20. |
Comparative Study on Effectiveness of On-Chip, On-Package, and
PCB Decoupling for Core Noise Reduction by Using Broadband Power Delivery Network Models
-- Om P. Mandhana - Freescale Semiconductor; ECTC
Conf. June 2005
This paper discusses the effectiveness of on-chip, on-package, and printed
circuit board decoupling capacitors used in the power delivery network of high performance
microprocessor systems for reducing the core power and ground noise over a wide frequency range.
The design flow discussed includes frequency based analysis of Z-parameter data which
is extracted and converted into compact SPICE compatible circuits for time domain simulations.
Sigrity products referenced:
PowerSI and
Broadband SPICE.
Paper
(PDF Format)
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19. |
Joint Study of Simultaneous Switching Noise
and IO Return Current for CMOS FPGA Package
-- Hong Shi - Altera Corp.;
DesignCon2005
This paper presents a joint study of return current effect
and SSN with a focus on ways to minimize the impact through chip and package co-design.
Sigrity products referenced:
PowerSI and
SPEED2000.
Paper
(PDF Format)
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18. |
Power Integrity Analysis of a Microcontroller plus its Chip Package
-- Ekkehard Miersch, Thomas Steinecke, Mehmet Goekcen
- EFM Consulting, Infineon Technologies; EMC Compo 2005
The power integrity of the system chip plus chip package of a 32-bit microcontroller
has been successfully analyzed by co-simulation of the microcontroller plus its BGA.
Sigrity products referenced:
XcitePI,
CoDesign Studio,
SPEED2000.
Paper
(PDF Format)
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17. |
Decoupling Capacitance Platform for Substrates,
Sockets, and Interposers
-- Josh G. Nickel, Joseph F. Rosenberger
- Silicon Bandwidth; DesignCon February 2005
The paper covers frequency and time domain analysis of IC package structures that
include a Silicon Bandwidth developed structural decoupling capacitance. The results of the
assessment are used to under stand power delivery functionality. Sigrity products referenced:
PowerSI and
SPEED2000.
Paper
(PDF Format)
Presentation (PDF Format)
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16. |
Power Delivery Modeling and Design Methodology for a Programmable Logic Device Package
-- Anil Pannikkat, Jon Long - Altera Corp.;
EPEP Conference 2004
A power delivery modeling and design methodology for a programmable logic device package
is presented in this paper. Both the DC IR drop and high frequency power ground input impedance have been
analyzed by commercial available power integrity software and calibrated with measurements.
Design modifications have then been carried out for power delivery system improvement of the package for next generation products.
Sigrity products referenced:
PowerSI.
Paper
(PDF Format)
Presentation (PDF Format)
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15. |
Transient Current Extraction from Time Domain Voltage Measurement
-- Yaping Zhou, Ben Herberg - Freescale Semiconductor;
EPEP Conference 2004
An easy method to extract the current signature of a core power supply is suggested and used to obtain the
transient current during HRESET of a microprocessor system.
Simulated results are highly correlated with lab measurements through gigahertz frequencies.
Sigrity products referenced:
SPEED2000.
Paper
(PDF Format)
Presentation (PDF Format)
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14. |
Power Delivery System Performance Optimization of a Printed
Circuit Board with Multiple Microprocessors
-- Om P.
Mandhana - Motorola Corp.; ECTC Conf., June 2004
An efficient simulation and analysis methodology for evaluating power delivery
system of a printed circuit board, mounted with multiple microprocessors is presented in this paper.
Sigrity products referenced:
SPEED2000 and
PowerSI.
Paper
(PDF Format)
Presentation (PDF Format)
|
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13. |
High Speed DDR Performance in 4 vs 6 Layer FCBGA Package Design
-- Edward Chan, Huabo Chen, and Chee Yee Chung -
NVIDIA Corp.; ECTC Conf., June 2004
This is a comparative study of the performance of 4-layer and 6-layer FCBGA packages
designed to support a high speed DDR1 interface.
Simulations are correlated with VNA measurements.
Sigrity products referenced:
PowerSI and
Broadband SPICE.
Paper
(PDF Format)
|
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12. |
Simulation Study of Power Delivery Performance on Flip-Chip Substrate
Technology
-- Ramani Tatikola, Musawir
Chowdhury - Agere Systems; ECTC Conf., June 2004
The input impedance of finite utility plane structures is calculated accurately
from the simulated package resonance data using a commercial signal integrity tool.
Sigrity products referenced:
PowerSI and
SPEED2000.
Paper
(PDF Format)
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11. |
Impact and Modeling of Anti-Pad Array on Power Delivery Systems
-- Zhiping Yang,
Sergio Camerlo - CISCO Systems; EPEP Conf., Oct., 2003
The impact of anti-pad array on power and ground planes, especially at the area right under the BGA package, has been studied in
this paper. An effective modeling and simulation approach based on 3D field computation has been used to take into
account the anti-pad array effect. The simulation results match the measurement results. It has been found that the effect of anti-pad array on power
delivery system is considerable; therefore it cannot be ignored in the power
delivery system analysis and design for high-speed applications.
Sigrity products referenced:
SPEED2000.
Paper
(PDF Format)
Presentation (PDF Format)
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10. |
Impact of High Impedance Mid-Frequency Noise on Power Delivery
-- Jennifer Tsai - Mindspeed Technologies;
EPEP Conf., Oct., 2003
In this paper, the core switching noise analysis of the power distribution system (PDS) for a signal
processor on a card is presented. SIGRITY's SPEED2000, a SPICE and full-wave based simulation tool, is used to study the
frequency and transient responses of the core switching noise. The correlation between the result in frequency
domain and time domain is discussed in detail. The frequency responses of the on-chip switching current and
package current are introduced to illustrate that the noise level caused by the high impedance of the PDSi s also
frequency dependent.
Sigrity products referenced:
SPEED2000.
Paper
(PDF Format)
Presentation (PDF Format)
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9. |
Package and Chip Design Optimization for Mid-Frequency Power Distribution
-- Bernd Garben,
George A.Katopis, Wiren D. Becker - IBM; EPEP Conf., Oct.,
2002
In this paper the mid-frequency power supply noise has been studied for a complex, next generation computer system by
simulations of the complete module and board power distribution system. An MCM-D and MCM-C design and the
effectiveness of on-chip and discrete on-module decoupling capacitors have been compared. The impact of delta-I
ramping over several cycles and the impact of the continuous background switching and on-chip leakage have been
analyzed. Conclusions are presented to optimize the chip and package design.
Sigrity products referenced:
SPEED2000.
Paper
(PDF Format)
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8. |
Frequency Dependencies of Power Noise
-- Bernd Garben, Roland Frech, Jochen Supper, and Michael F. McAllister - IBM;
IEEE Transactions On Advanced Packaging, May, 2002
In this paper, frequency dependencies of
delta-I noise caused by variations of the on-chip switching activity
have been analyzed by simulations for a complex computer system board with multi-chip module, especially the impact of
coincidences with resonances of the power distribution system.
Sigrity products referenced:
SPEED2000.
Paper
(PDF Format)
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7. |
Mid-Frequency
Delta-I Noise Analysis of Complex Computer System Boards
with Multiprocessor Modules and Verification by Measurements
-- Bernd Garben - IBM Germany; IEEE Transactions On Advanced
Packaging, August 2001
In this paper a methodology for mid-frequency delta-I noise analysis of a power distribution
system is discussed. The approach enabled identification of the dominant resonant oscillations
on the power distribution and have been confirmed by measurements within 5%.
Sigrity products referenced:
SPEED97.
Paper
(PDF Format)
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6. |
Mid-Frequency
Delta-I Noise Simulation on Complex System Boards Using SPEED97
and Measurement Verifications
-- Bernd Garben - IBM Germany;
EPEP Conf., October 2000
A power/ground noise analysis simulation methodology shows correlation
within 5% of measured results creating an efficient environment for analyzing complex
package structures during every system development phase.
Sigrity products referenced: SPEED97
Paper
(PDF Format)
Presentation (PDF Format)
|
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5. |
Evaluating
HDI Technologies for High-Bandwidth Applications
--
Sam Beal - Alpine Microsystems; HDI, July 2000
Wide I/O busses and
switching at high speeds require careful handling to avoid system performance problems.
Implications for a range of designs including SiP are discussed. 3D modeling of package
board data is used to predict switching noise voltage vs. area and determine resonance over
the frequencies of interest. Sigrity products referenced: SPEED97
Paper
(MS Word Format) |
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4. |
Using An Electromagnetic Simulation Tool For Demonstrations
In A Course On Electronics Packaging
--
Harry Kroger - SUNY; InterPAK Conf., June 1999
This paper profiles a
range of experiences utilizing electromagnetic simulation as part of coursework at the
University of Maryland. Crosstalk and signal integrity issues were emphasized with
observation of coupling between structures. Sigrity products referenced: SPEED97
Paper
(PDF Format) |
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3. |
Modeling of the Electrical Performance of the Power and Ground Supply for a PC Microprocessor on a Card
--
Dennis Herrell - AMD; EPEP Conf., October 1998
The electrical characteristics of the power and ground supply of a PC microprocessor
packaged in a BGA package mounted on a PCB are studied by dynamic electromagnetic field analysis.
The effects of decoupling capacitors of different types at various locations are investigated to
achieve the objectives of low power and ground impedance and low resonance inside the package.
Sigrity products referenced: SPEED97
Paper
(PDF Format) |
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2. |
Extraction of Equivalent Circuit Models of Package Power Supply Distribution Systems from Full Wave EM Field Simulations
--
Francesc Moll; EPEP Conf. , October 1998
Full wave extraction of circuit models for package power supply distribution systems
is discussed along with time and frequency domain optimizations.
Sigrity products referenced: SPEED97
Paper
(PDF Format) |
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1. |
Measurement and Simulation of Simultaneous Switching Noise in the Multi-Reference Plane Package
--
Steven Rosser, Michael Kerr - IBM; Chi Shih Chang - SEMATECH;
Jiayuan Fang, Zhaoqing Chen, Yuzhe Chen - SUNY; ECTC Conf., October 1996
A series of experiments representing simultaneously switching circuits in a multi-reference
package are described. Simulations are used to assess variations in package configuration
complexity. The results of various simulation approaches are compared to theoretical
calculations. Sigrity products referenced: SPEED97
Paper
(PDF Format) |
