CAD E N C E O R C A D S I G N A L EXP L O R E R S I G N A L I N T E G R I T Y TEC H N O L O G Y

DATASHEET

Cadence OrCAD signal integrity technology is available in the following products: OrCAD Signal Explorer
Cadence OrCAD Signal Explorer helps engineers address signal integrity issues throughout the design process from the conceptual schematic through placement and final routing. It enables pre- and post-route topology exploration, signal analysis, and validation, allowing designers to increase circuit reliability and drive known-good interconnect requirements throughout the PCB design flow.
Increasing design density, complexity, and faster edge rates create a multitude of signal integrity issues, which can lead to time-consuming and frustrating simulatefix-simulate iterations and increased production costs. Cadence OrCAD Signal Explorer helps engineers address these issues throughout the design process from the very beginning of the cycle through placement and final routing. The same signal integrity issues increase the need for an integrated design flow that enables designers to easily perform post-layout extraction and verification of complex PCB interconnect. An integrated design and analysis environment eliminates the need to translate design databases to run simulations and analysis. Seamless integration with Cadence OrCAD PCB Editor eliminates database conversion and possible translation issues. Engineers can now perform signal integrity analysis or topology exploration at any stage of the design cyclewhen the board is partially or fully placed, partially or fully routed, and even when no netlist or PCB database exists.
Figure 1: OrCAD Signal Explorer analyzes and validates topologies and interconnect to help minimize potential SI-related issues for fewer respins and shorter lab debug time
OrCAD Signal Explorer consists of the Tlsim simulation engine, the SigXplorer topology editor, the SigWave waveform display, translators from other modeling formats, and a library model editing/management subsystem. The IBIS modeling standard is supported natively in addition to Cadence DML (device modeling language) support. A transistor-level model import wizard prepares models to run with the native SPICE simulators.

BENEFITS

Enables pre- and post-layout signal integrity analysis at any stage of the design cycle, ensuring constraint adherence Allows exploration, analysis, and design of interconnect topologies to increase circuit reliability, improve circuit performance, and reduce prototype re-spins Eliminates the need to translate design databases to run simulations by importing extracted topologies directly from OrCAD PCB Editor Provides an easy-to-use model editing environment that creates, manipulates, and validates a variety of models, quickly improving model/simulation performance
results. If the results do not match, the routed board can be modified and the net re-analyzed.
equipment formats as well as from the output formats of popular signal integrity analysis tools.

SIGXPLORER MODULE

OrCAD Signal Explorer provides an electrical view of the physical interconnect and a simulation cockpit for analysis of critical high-speed signals. Users can explore a net before schematics are created by using the SigXplorer module in a standalone mode. SigXplorer provides various stripline and microstrip modelslossy or losslessto get started with the exploration. Since OrCAD Signal Explorer integrates seamlessly with OrCAD PCB Editor, users can extract a net in the pre-route or post-route stage right into SigXplorer. Users can then quickly analyze the signal using SPICE-based simulation.

MODEL INTEGRITY

The Model Integrity module provides an editing environment within OrCAD Signal Explorer that allows the creation, manipulation, and validation of models quickly and easily. This module includes a model browser and syntax checker for models written in IBIS as well as for advanced models written in DML. OrCAD Signal Explorer accepts device models from a variety of digital modeling formatsincluding support for the IBIS modeling standardwhich means models created by most semiconductor manufacturers can be used. In addition, OrCAD Signal Explorer provides DML, a next-generation modeling language for more complex devices. This flexible macromodeling extension language augments IBIS and allows state-of-the-art I/O functionality to be modeled quickly and accurately.

FEATURES

ANALYSIS
OrCAD Signal Explorer provides pre- and post-route topology exploration and transmission line analysis. It allows conceptual, pre-design / schematic topology exploration and simulation as well as routed or unrouted board topology extraction and analysis directly from an OrCAD PCB Editor database (.brd).

SIMULATION ENVIRONMENT

The Tlsim simulation engine combines the advantages of traditional SPICE-based structural modeling with the speed of behavioral analysis. It includes an IBIS-style behavioral driver element that models I/O behavior based on the V-I and V-T data provided by behavioral modeling techniques.

PRE-LAYOUT ANALYSIS

Through topology exploration and simulation, critical nets can be planned proactively to minimize signal integrity problems earlier in the design cycle. Using the SigXplorer canvas, topologies are easily defined along with board stackup requirements and signal termination strategies.
Figure 2: View and analyze simulation results in SigWave

SIGWAVE

The SigWave waveform display can present simulation results in multiple formats. The oscilloscope mode allows the display of individual waveforms on and off, and provides markers for on-screen measurement. The logic analyzer mode presents waveforms alongside one another, so logic behavior and bus transactions are easier to observe. The spectrum analyzer mode displays signal behavior in the frequency domain using one of several FFT techniques. The eyediagram mode is useful for viewing patterns in long simulation sequences. SigWave also allows import of waveform data directly from various standard test

POST-LAYOUT ANALYSIS

With the ability to extract topologies directly from the PCB design database, simulation on critical nets allows detailed analysis to validate the layout work matches the pre-route requirements. Signals are extracted back into the same canvas that was used to analyze the net, during pre-route, and the routed signals analysis can be compared to the expected

Figure 3: Users can change topologies or stack-up information and perform quick, iterative tradeoffs
By combining both structural and behavioral modeling techniques, Tlsim enables accurate and efficient modeling of complex device behavior. It includes a lossy, frequency-dependent transmission-

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ORCAD SIGNAL EXPORER SIGNAL INTEGRITY TECHNOLOGY
line model that accurately predicts the distributed behavior of PCB traces up to several gigahertz. An integrated electrical field solver determines the electrical characteristics of routed etch and creates electrical models of PCB vias.
SALES, TECHNICAL SUPPORT, AND TRAINING
The OrCAD product line is owned by Cadence Design Systems, Inc., and supported by a worldwide network of Cadence Channel Partners (VARs). For sales, technical support, or training, contact your local Cadence Channel Partner (VAR). For a complete list of authorized Cadence Channel Partners (VARs), visit www.cadence.com/Alliances/ channel_partner

FUTURE-PROOF SCALABILITY

Unlike other signal integrity solutions, OrCAD Signal Explorer has the ability to grow with changing exploration and analysis needs and technology challenges. Based on Allegro SI technology, the OrCAD SI solution provides the security of scalability to meet future challenges easily. Features and technologies are shared across the OrCAD and Allegro product lines. This allows products to be easily upgraded and expanded without the need to translate databases or libraries, learn new applications, or change use models.
2010 Cadence Design Systems, Inc. All rights reserved. Cadence, the Cadence logo, Allegro, and OrCAD are registered trademarks of Cadence Design Systems, Inc. All others are properties of their respective holders. 21574 08/10 MK/DM/PDF

CADENCE OrCAD PCB DESIGN SUITES

DATASHEET

Cadence OrCAD PCB design technologies are available in the following suites: Cadence OrCAD PCB Designer Basics Cadence OrCAD PCB Designer Cadence OrCAD PCB Designer with PSpice Cadence OrCAD EE Designer Cadence OrCAD EE Designer Plus
Cadence OrCAD PCB design suites combine industry-leading, production-proven, and highly scalable PCB design applications to deliver complete schematic entry, simulation, and place-androute solutions. With these powerful, intuitive tools that integrate seamlessly across the entire PCB design flow, engineers can quickly move products from conception to final output.
To stay competitive in todays market, companies must move their designs from engineering to manufacturing within evershrinking design schedules. Available as standalone products or in comprehensive suites, Cadence OrCAD personal productivity tools have a long history of addressing PCB design challenges, whether simple or complex. The powerful, tightly integrated PCB design technologies include OrCAD Capture for schematic design, various librarian tools, OrCAD PCB Editor for place and route, PSpice A/D for circuit simulation, OrCAD Signal Explorer for signal integrity analysis, and SPECCTRA for OrCAD for automatic routing. Easy to use and intuitive, these tools bring exceptional value and future-proof scalability to the Cadence Allegro system interconnect design platform to grow with future design demands. OrCAD PCB design suites provide integrated front-end design and simulation technology (Cadence OrCAD EE Designer) as well as an integrated back-end place-and-route design solution (Cadence OrCAD PCB Designer) to boost productivity and accelerate time to market.

BENEFITS

Future-proof scalability with tiered and segmented technology meets a wide array of PCB design challenges and requirements
Figure 1: OrCAD PCB design suites provide a complete place-and-route environment including interactive and automatic routing, cross-probing, and constraint management
Solutions can be tailored to specific design needs and budget requirements, maximizing investment with a low cost of entry and ownership Production-proven and easy-to-use PCB design solutions boost productivity and help meet project schedules Tightly integrated applications provide a seamless data flow, ensuring integrity
is done without the need to translate databases or libraries, learn new applications, or change use models.

PARTNERSHIPS/ ECOSYSTEM

Cadence understands the complex PCB design challenges of todays competitive market and the need for tailored solutions and support. Through our worldwide network of Cadence Channel Partners (VARs), were able to better serve a broader customer base with superior sales, support, and service.

FEATURES

PRODUCTION-PROVEN
OrCAD PCB design technologies combine production-proven OrCAD and Allegro technologies into comprehensive frontto-back solutions. Utilized in every market segment and production environments at leading high-tech companies, OrCAD PCB design technologies are proven to help meet aggressive schedules and technology goals in todays challenging design environments.
Figure 2: Constraint Manager allows definition, management, and validation of physical/spacing constraints, as well as design rule checks, through an easy-to-use spreadsheet interface
SALES, TECHNICAL SUPPORT, AND TRAINING
The OrCAD product line is owned by Cadence Design Systems, Inc., and supported by a worldwide network of Cadence Channel Partners (VARs). For sales, technical support, or training, contact your local VAR. For a complete list of authorized VARs, visit www.cadence. com/Alliances/channel_partner. PSpice A/D PSpice OrCAD Advanced PCB Analysis Editor SPECCTRA for OrCAD

SCALABILITY

Unlike other PCB design solutions, OrCAD PCB design suites can grow with future design needs and technology challenges. They provide a feature-rich, fully scalable solution that can be expanded and upgraded as PCB challenges and the level of design sophistication grows. OrCAD PCB design suites combine both time-proven and new OrCAD technology, and they reflect the Cadence commitment to and investment in powerful, easy-touse PCB design technology. Technology is shared across the OrCAD and Allegro product lines, so the design suites can easily be upgraded from the OrCAD line to the Allegro platform. This migration
Collaboration with third-party vendors/ OEMs extend OrCAD and Allegro PCB design solutions, providing complementary and custom design capability. This ecosystem leverages the strengths and synergies of Cadence and third-party technologies for the best possible solution and value to customers. OrCAD Capture OrCAD PCB Designer Basics OrCAD PCB Designer OrCAD PCB Designer with PSpice OrCAD EE Designer OrCAD EE Designer Plus

Optional Optional

Table 1: OrCAD PCB design suites offer the flexibility to choose a solution tailored to meet specific design needs * Limited database (layers, components, connections)
2010 Cadence Design Systems, Inc. All rights reserved. Cadence, the Cadence logo, Allegro, OrCAD, PSpice, and SPECCTRA are registered trademarks of Cadence Design Systems, Inc. All others are properties of their respective holders. 21383 03/10 MK/DM/PDF