Description
Siemens Custom IC Design (Tanner Tools) 2025.4 – Professional Analog / Mixed-Signal IC Design, Layout & Verification Flow
Siemens Custom IC Design 2025.4 (formerly known as Tanner Tools) is a powerful, production-ready software suite for custom IC design, combining schematic capture, layout, simulation setup, and physical verification-driven workflows in one integrated environment. It is widely used for analog IC design, mixed-signal IC development, RF layout, MEMS implementation and photonic design, with broad foundry and PDK support for both FinFET and planar technologies.
Designed to help engineers move faster from concept to tape-out, Siemens Custom IC Design is an enterprise-grade platform with 30+ years of experience and thousands of tape-outs behind it—making it a trusted choice for companies that need reliable results, consistent productivity, and scalable workflows.
What’s New in Siemens Custom IC Design 2025.4
Custom IC Design 2025.4 is part of Siemens EDA’s ongoing release line, typically delivering workflow improvements, performance tuning, usability upgrades, and stability enhancements across schematic-driven design, custom layout, and verification steps.
Important note for buyers: Siemens publishes the full “New in 2025.4” feature list and resolved issues in official release documentation (often distributed through support or authorized partners). If you need a detailed module-by-module change log, request the official 2025.4 Release Notes via Siemens support or your distributor.
Highlights (Why engineers choose Siemens Custom IC Design 2025.4)
✅ Complete Custom IC Design Flow (Capture → Implement → Verify)
Siemens describes this platform as a complete custom IC design environment to capture, implement, drive simulation, and enable physical verification. This supports a streamlined workflow without constantly jumping between disconnected tools.
✅ Broad Technology Coverage: FinFET + Planar + “More than Moore”
Custom IC Design is built for innovative design domains where full-custom control is essential—especially analog/mixed-signal, MEMS, and photonic design workflows. Siemens positions the platform specifically for “More than Moore” designs where process and device diversity matters.
✅ Trusted Foundry/PDK Ecosystem
L-Edit and the Custom IC flow are supported by a strong ecosystem, including support for FinFET, planar and other transistor technologies. Siemens also highlights support by more than 30 foundries and 200+ PDKs, helping teams deploy faster across many processes.
Core Tools Included (Tanner Tools heritage + Siemens workflow)
S-Edit – Schematic Capture & Design Entry
S-Edit is Siemens’ schematic capture environment for mixed-signal and custom IC development. Siemens highlights S-Edit’s integration across simulation and layout workflows to improve productivity and speed concepts to silicon.
- Efficient schematic-driven design entry for AMS design
- Integrated flow with layout and simulation setup
- Designed to support complex mixed-signal IC projects
L-Edit – Custom IC Layout for Full-Custom Designs
L-Edit is Siemens’ full-custom physical layout tool designed to handle complex hierarchical designs and advanced geometry use cases. It supports both custom layout and schematic-driven layout and is frequently used for AMS, RF, MEMS and photonics layout needs.
- Full-custom hierarchical physical layout
- Supports FinFET + planar technologies
- All-angle and curve support (useful for power devices, MEMS and photonics)
- OpenAccess-based environment with multi-user support
Simulation & Analysis Workflow Support
Siemens positions Custom IC Design as a complete environment that supports design capture, simulation set-up, launch, results viewing, and analysis. That helps analog teams run faster iterations and reduce manual workflow overhead.
Physical Verification & Signoff-Driven Design (Productivity + Confidence)
Modern tape-out success depends on verification-driven layout practices. Siemens highlights that S-Edit integrates tightly with layout and verification workflows, including connections to Calibre LVS/PEX flows, supporting a verification-ready environment for custom IC design teams.
Why it matters: A well-integrated verification flow reduces risk late in the project and helps ensure that layout, extracted views, and schematic intent remain aligned throughout design evolution.
Top Benefits for Engineering Teams
1) Faster design cycles and fewer manual steps
By keeping schematic capture, layout implementation, and simulation/verification flow steps closely connected, teams can iterate faster and avoid time lost on tool friction.
2) Better productivity for analog and mixed-signal development
Custom IC design work is detail-heavy. Siemens Custom IC Design focuses on usability and workflow completeness—helping engineers stay productive during long layout sessions and repeated refinement cycles.
3) Strong fit for RF / MEMS / Photonics layout challenges
With advanced geometry support (including all-angle and curve capability) and applicability to MEMS and photonic design categories, L-Edit is frequently used for layouts that go beyond standard “Manhattan-only” patterns.
System Requirements (Minimum + Recommended)
System requirements can vary by project size, PDK complexity, and verification workloads. The practical baseline below is commonly published for Siemens Custom IC installations:
Minimum / typical workstation requirements
- OS: Windows 10 or Windows 11 (64-bit)
- RAM: 4 GB recommended (more strongly recommended for real projects)
- Disk space: ~10 GB available
Recommended for professional IC layout + verification workloads
- RAM: 16 GB to 32 GB+ (large libraries + big layouts)
- Storage: SSD/NVMe for fast database performance
- CPU: modern multi-core processor for smoother multitasking and faster runs
- Display: higher resolution recommended for layout productivity
Best practice: If you are running large verification/extraction loops or working with advanced PDKs, invest in more memory and fast SSD storage for a noticeably smoother experience.
Bug Fixes, Stability Improvements & Performance Updates
Siemens Custom IC Design 2025.4 includes ongoing improvements designed to make daily work more reliable in production environments—especially during long sessions of layout editing, library management, and iterative design refinement.
These types of updates are valuable because they help reduce:
- Unexpected workflow interruptions during extended layout work
- Slowdowns when working with large design databases and PDK libraries
- Errors that appear only during special device configurations or edge-case layout patterns
Where to find the full resolved-issue list: Siemens provides official release documentation (release notes / resolved issues) through support distribution. For complete details on 2025.4 bug fixes and enhancements, request the official release notes via Siemens support or your distributor.
Interesting Facts:
- Designed for “More than Moore”: Siemens positions Custom IC Design as an ideal platform for advanced mixed-technology design needs like MEMS and photonic design.
- Large ecosystem footprint: L-Edit is supported by 30+ foundries and 200+ PDKs, helping reduce adoption risk across many processes.
- One consistent workflow: Siemens describes the platform as a complete environment that connects capture, implementation, simulation, and verification steps—ideal for engineering teams that want a unified custom IC.
★★★★★
As an analog/mixed-signal IC design developer, I’ve had an excellent experience with Siemens Custom IC Design (Tanner Tools) 2025.4 for production custom IC work. The workflow for schematic capture (S-Edit) and custom layout (L-Edit) feels efficient and very stable, especially when managing large libraries and complex hierarchical designs. It’s a practical, engineering-focused suite that supports real-world custom IC design needs from concept through implementation, and it helps keep iterations fast without unnecessary friction.
What I appreciate most is how well it fits modern analog IC design and mixed-signal layout requirements while staying flexible for specialized work like RF, MEMS, and photonics design. The toolset remains familiar for teams coming from Tanner, but with Siemens-level polish and reliability—making Siemens Tanner Custom IC Design 2025.4 a strong choice for teams aiming for consistent productivity and tape-out ready results.



★★★★★




