AgO Overview

60 %
40 %
Information about AgO Overview

Published on March 2, 2014

Author: hillol



Advanced Generation Optimization.

Analog & RF Circuit Optimization Hillol Sarkar Dr. Bish Ray

What we will talk about • Company Background • Challenges in Analog and RF design • Overview of AnXplorer • Competitive Differentiation 2 © Copyright AgO Inc 2011

Company Background • • • • • • 3 Founded in 2007 Held senior positions at National Held senior position in GE and Toshiba Awarded 8 Patents and 15 papers -National AgO - Advanced Generation Optimization Global Sales & Marketing Presence Q4 2011 © Copyright AgO Inc 2011

Challenges in Analog & RF Design Maximising yield • Validating greater numbers of process, voltage and temperature corners • Efficiently centering design across all PVT corners using Monte Carlo Achieving design specification • Meeting or beating performance while minimising cost of implementation • Managing greater complexity in operating and power saving modes Respin avoidance • Analog circuits are responsible for ~ 50% of IC design re-spins • Re-spins can mean missing market windows and unbudgeted costs Design porting • Moving existing circuit designs to similar technologies • Re-centering design to meet constraints of new technology 4 © Copyright AgO Inc 2011

Classic Analog Design Methodology • Design methodology has changed little over the years • Manual, iterative design with many SPICE runs Design specification & constraints Define topology & resize devices Spice Physical layout & adjust Spice Extraction Layout verification 5 © Copyright AgO Inc 2011

Optimization Strategy Feasibility Global Optimization Description • DC Operation • Increase Margin • Quick check • Best Design Space Description • Single Corner • Meet performance • Monte Carlo • Ready for Center Centering Description • All Corners • Rapid Size • Ready for P&R AgO Optimization Strategy 6 © Copyright AgO Inc 2011 Database Description • Conflict • Change Priority • System Analysis

AnXplorer Goals • • • • • 7 Quickly size W/L a circuit in a given technology Explore suitability of different design options Robust design PVT variations & Monte Carlo Support all types of devices Explore results using database © Copyright AgO Inc 2011

AgO Design Methodology AnXplorer automates device resizing using SPICE runs Design specification & constraints Define topology Feasibility Global Physical layout & adjust Centering AnXplorer Extraction Layout verification 8 © Copyright AgO Inc 2011

Porting of Existing Circuits Common challenge • Port existing design in technology X (say 180 nm) to technology Y (in 180 nm) • Ensure that original design goals are met AnXplorer approach • Start with original sized circuit • Define variable ranges for target circuit • “One click” command • Optimises and centers with new PVT corners 9 © Copyright AgO Inc 2011 Vendor X Porting Vendor Y

Prioritized Design Objectives • Most tools support a weight-based prioritisation for multiple objectives – Designer is often unsure of relative weights • AnXplorer supports hierarchical design objectives – User defines relative priority of different objectives • AnXplorer achieves important objectives before optimizing others 10 © Copyright AgO Inc 2011

Implicit Objectives • Imposes implicit objectives on conditions of devices at DC operating point • Customizable objectives • Detects common sub-circuits and imposes constraints on their operating conditions • Ensures a robust DC operating point • Feature only available for MOS devices 11 © Copyright AgO Inc 2011 Examples of subcircuits: • transistors in saturation • transistors in linear region • current mirrors • level shifters • differential pairs • voltage reference • current mirror banks • etc

Core Optimization Technology Early Optimisation tools • Frequently relied on traditional convex/gradient methods • These are known to have difficulty with multiple local minima AnXplorer • Based on Evolutionary algorithm • Capable of finding global minimum in presence of many local minima • Successfully optimised tough tests e.g. Rastrigin’s function • Optional logarithmic partitioning of design space 12 © Copyright AgO Inc 2011 Supports both simulation-based optimization & equation-based optimization

Multiple Local Minimum 13 © Copyright AgO Inc 2011

Trade-off Analysis • Finds multiple design points satisfying design objectives • Creates exploration database for postoptimization analysis – Database stores all explored design points – Query language or GUI • Useful for trade-off analysis with conflicting objectives • Useful for “what-if” analysis 14 © Copyright AgO Inc 2011

Industry Standard Formats Compatible with existing design flows Un-sized circuit Schematics Definition of Design variables Design objectives AnXplorer Sized and centered net list 15 © Copyright AgO Inc 2011 Exploration database for Trade off analysis

Design Environment • Spice Simulators – – – – – Cadence Spectre Synopsys Finesim & HSpice Mentor Eldo Silvaco Smart Spice Multi-threading support • Operating system – Red Hat Enterprise Linux RHEL 5 16 © Copyright AgO Inc 2011

Competitive Differentiation • One product, four optimization steps • Robust centering to maximise yield –Monte Carlo • Implicit objectives for stable DC operation (CMOS) • Hierarchical design objectives • User can perform trade-off analysis • Industry standard formats and simulators • Core based on Evolutionary Algorithm 17 © Copyright AgO Inc 2011

Analog and RF Optimization New generation Analog & RF Circuit Optimization

Add a comment

Related presentations

Related pages

Overview - AGO

AGO is an independent organ of state and the national auditor. We play an important role in enhancing public accountability in the management and use of ...
Read more

Camp Overview | AGO Art Gallery of Ontario

Today, I'm visiting the AGO website: For inspiration. To learn something new. To plan an activity for my family/friends. Because the AGO was recommended to me.
Read more

Drawer inserts / Overview / Product range / Agoform

SKY Clear, variable structures for the modern kitchen. > Details. MOVE Clear, variable structures for the modern kitchen
Read more

Join the AGO today ... you belong here! | AGO Art Gallery ...

← Back to AGO Membership. Join the AGO today ... you belong here! Buy or renew. Now's the time to be part of the Art Gallery of Ontario! A spectacular ...
Read more

AGO: Overview | I3investor

A free and independent portal for stock investors. The portal provides aggregated investment Blogs and News, Stock Database & Quotes, Price Targets, and ...
Read more

overview - agor-eng

AGOR’s skilled craftsmen can design and build virtually any mechanically designed structure or add-on in your home, office, club or hotel. A keen ...
Read more

AGO-Wood Flexible organisation - AGOFORM

With AGO-Wood, AGOFORM is providing a new combination of materials in solid wood and synthetic rubber. The new cutlery insert allows flexible organisation ...
Read more

AGO Stock Quote - Assured Guaranty Ltd. Stock Price Today ...

Updated stock quote for ago - including ago stock price today, earnings and estimates, stock charts, news, futures and other investing data.
Read more

Membership Overview - American Guild of Organists

American Guild of Organists 475 Riverside Dr., Suite 1260 New York, NY 10115 Telephone: 212-870-2310 Fax: 212-870-2163 Email: Major support ...
Read more