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Allegro PCB Designer 

Constraint-driven PCB design

Cadence® Allegro® PCB Designer quickly takes simple or complex designs from concept to production in a constraint-driven design system. Its scalable based plus options model allows designers to cost-effectively match the technological and methodological needs of small to large companies and projects.

Allegro PCB Designer Datasheet »
Allegro PCB Designer Manufacturing Option Datasheet »
Allegro PCB RF Option Datasheet »
16.6 Release 16.5 Release
Allegro PCB Designer (16.6 release)
  • Support for embedding components with dual-sided contacts and vertical components on the inner layers of a PCB
  • New embedded cavity DRCs
  • Faster timing closure with auto-interactive route delay tuning (AiDT)
  • PCB Team Design Option accelerates design implementation
    • Users can edit constraints and move components outside their design partition (flexible boundaries) without having to merge and split
    • An ECO wizard helps import netlist changes into design partitions
  • Auto-interactive pin-swap (“Planning Mode”) for FPGAs within Allegro PCB Editor using Allegro FPGA System Planner under-the-hood
  • Offset routing allows users to route off-orthogonal angles to avoid coupling high-speed signals with substrate glass fiber-weaves
  • New Slide function
    • New auto-join option during Slide simplifies the process of editing (orthogonal / off-angle) etch
    • Ability to slide segments with corners (three-segment slide)
    • Slide vertex preserves segment angles
  • DFM
    • Export / import design data to and from manufacturing using the open industry-standard IPC-2581
  • New artwork control form allows users to assign film record classes and subclasses to a film record
  • Additional ease-of-use and productivity improvements
    • General Edit Application Mode allows users to assign a single region constraint to multiple region shapes
    • Align components by edge (top, center, bottom) using DFA constraints or equal spacing (controllable by user-defined equal spacing and + and - buttons)
    • Support for text in Place Replicate
    • Quickplace allows component overlap (user-defined % overlap) to get the components on the board faster
    • Refresh a symbol by instance
    • New command allows users to add rectangles with parameterized corners (champhered, rounded, or orthogonal)
    • Dynamic shape allows thermal width for cross-hatch shapes based on the cross-hatch line width
    • New display option overlays net names along cline path, pins, shapes, and flow lines
    • Lines and text can now be moved outside their present class-subclass structure
    • Select objects by “Lasso” or “path”
    • Highlight or de-highlight nets associated with a component
    • DRC can now be run “by window” when online DRC is turned off
    • Specify any text for the associative dimension value using the optional Text filed in the Options tab
    • Specify separate output files for plated versus non-plated (NC) routing
    • Pastemask-to-pastemask DRC will check the “Package Geometry - Pastemask_Top” shapes within the same symbol
Allegro PCB RF Option
  • Improvements to importing from Agilent ADS to Allegro Design Authoring
    • Complex If …then.. elseif…elseif… expressions/equations support
    • Parasitic component import support
    • Import schematic as a block
    • Use same RefDes as in ADS including name, font size, and location
  • Support for new ADS RF etch elements libraries
    • VIA2 (cylindrical via hole in Microstrip)
    • SLINO
  • Snap improvements
    • Snap to any edge of a pad
    • Snap to a group
  • “Add Connect” allows users to connect to the edge of a pad, or overlapping a pad
  • Scaled copy allows snap to pad edge
  • Unnecessary DRC errors removed on netlist is imported into Allegro PCB Editor
  • Via exchange between ADS and Allegro environment

What's New in 16.5 Allegro PCB Design
Allegro PCB Editor
  • Front-to-back flow support for embedded packaged components
    • Supports traditional direct-attach as well as new indirect-attach methods
    • Provides support for open/closed cavities
    • Enables a constraint-driven embedded component design with constraints coming from design intent as well as from the targeted manufacturing approach (direct/indirect, etc.)
  • ECAD-MCAD co-design with ProStep EDMD Schema
    • Incremental design data exchange
    • Accept/reject for each change at object level
    • Notes/history
    • Review changes before accepting
  • Interconnect Flow Designer
    • Hierarchical route planning through bundle creation
    • Assign layers to bundles
    • Create “flow” plans for bundles
  • Use “rakes” to view rat-crossings easily
  • Intelligent PDF output
    • Produces Allegro board data in PDF with intelligent data for components, nets, and test points
    • Users can specify what graphical class/subclass layers may be viewed and what properties are to be extracted (see Allegro Design Publisher below)
  • Associative dimensioning
  • New differential phase tuning eliminates slow approach of tuning differential pairs to meet static or dynamic phase conditions
  • Dynamic trace tapering allows trace width changes across constraint-regions or on simple neck-downs
  • Group route via patterns for easy transition to different layers during multi-line routing
    • Differential pair transitions at region boundary provide symmetrical gathering at the boundary when crossed orthogonally or at 45 degrees
    • High-density interconnect (HDI) via-to-via line-fattening control option runs on selected clines
  • Delete unnecessary via structures from design database
  • Highlighting with stipple patterns
  • Separate dynamic and static shape display restored
  • Identify fixed elements with stipple pattern overlays
  • Data tip setup has been expanded to 17 entries
  • Placement using dynamic Design For Assembly (DFA) is now available in Allegro PCB Designer and supports side-end and end-side as distinct rules
  • Placement using dynamic DFA allows users to place components easily with minimum DFA clearance
  • Design for fabrication (DFF)
    • Minimum metal-to-metal clearance support to ensure minimum metal-to-metal clearance is met
  • Duplicate drill check detects duplicate drill holes spanning the same layers
  • Duplicate drill holes may be based on the same or different pad stack definitions
  • Backdrill capability now supports “any layer”-to-“any layer” configurations
  • Cumulative max neck length check
  • Database locking
    • Multi-threading DRC update now takes advantage of up to 16 processor cores running on the same machine
Allegro Design Publisher
  • Publishes Allegro board data in PDF
  • Exports reference designators, component properties, netnames, net properties, and test point data
  • Provides document controls such as options to reduce file size, maximize password security, and minimize property output
Allegro Analog / RF PCB Design
  • Context-sensitive RF PCB design
  • Custom shape import/export from/to Agilent ADS
  • Import hierarchical components in schematics from Agilent ADS
  • Insert a transmission line between two lines
  • Taper a transmission line
Allegro PCB Router
  • Performance improvements
  • Quality of routs (QoR) improvements for differential pairs
  • Alignment of rules with Allegro PCB Editor for HDI rules, inset vias, tangent vias
  • Support for embedded packaged components
  • Acid trap control for micro-vias that are tangent to a core via (automatic line fattening)
  • Via-list prioritization synchronized with setting in Allegro PCB Editor
Allegro Design Planning Option
  • Feasibility analysis and feedback for route plans created using Interconnect Flow Designer
  • Create “spatial” plans using the route engine
  • Convert “spatial” plans to traces (CLINES) quickly