Front-To-Back MMIC Design Flow with ADS. Speed MMICs to market Save money and achieve high yield

Transcription

1 Front-To-Back MMIC Design Flow with ADS Speed MMICs to market Save money and achieve high yield 1

2 Unique Tools for Robust Designs, First Pass, and High Yield Yield Sensitivity Histogram (YSH) to components 2

3 Agilent EEsof MMIC Foundry Partners All ADS kits are built and certified by foundries Atmel austriamicrosystems Bookham Technology Cree, Inc. Filtronic Compound Semiconductors Global Communication Semiconductors, Inc. (GCS) IHP Microelectronics Infineon IBM Microelectronics Jazz Semiconductor Knowledge*on Semiconductor Maxim Integrated Products Northrop Grumman Electronic Systems Northrop Grumman (Velocium) MagnaChip Semiconductor Ommic Peregrine Semiconductor Raytheon RF Components Philips Electronics N.V. Semiconductor Manufacturing International Corporation (SMIC) STMicroelectronics Triquint UMC UMS TSMC WIN X-FAB 3

4 Advanced Tools Seamlessly Integrated in ADS Convolution Circuit Envelope Phase Noise at VCO s Output Linear Simulator Planar EM Momentum Phase Noise at Divider s Output AM Noise at Divider s Output Harmonic Balance FEM 3D EM (EMDS) 3D Features includes 3D JDEC Bond Wire 4

5 True MMIC Verification Prior to Manufacturing True MMIC Design Verification prior to Manufacturing is done by Co-simulating the MMIC inside the package and with bond wires using EMDS in ADS 2008 EMDS JDEC Bond Wire 5

6 PA Verification to Wireless Standards Realistic Input Signals and test benches for all Wireless Standards WIMAX Transmit Source PA Verification to wireless Standards PA 6

7 ADS Complete Front-to-Back MMIC Design Flow Part 1 Schematic Entry 7

8 Agilent EEsof EDA MMIC Foundry Partners All ADS Kits are built and Certified by Foundries Knowledge*on Gaetec The only complete MMIC PDK offering in the EDA Market, that is fully supported, maintained, and regularly updated by the foundries. If we don t have the PDK kit you need, we ll create it for you! 8

9 Advanced Model Composer (AMC) Technology AMC brings the accuracy of EM simulation and the speed of analytical models into a single, user-defined, compact model. Arbitrary user-defined parameterized shapes Generates model, symbol & layout 9

10 Example: TriQuint MASC Design Kit Valid Range of models EM based Inductor Models Using AMC Technology 10

11 Fully Parameterized Lines and Discontinuities Initial Line Lines Information contain Layers and current density Modifying the line by inserting an air-bridge with an offset and angle 11

12 12 Example: LNA - TriQuint MASC Design Kit

13 13 ADS Complete Front-to-Back MMIC Design Flow

14 Demo example Ku-band LNA Front End Design FET Characterization 14

15 Front End Design Biasing, Stability, Max Gain, Noise and Gain Circles 15

16 Front End Design 16

17 Impedance Matching 17

18 Front End Design 18

19 Front End Design 19

20 Front End Design 20

21 Front End Initial Design Yield Analysis 21

22 ADS Complete Front-to-Back MMIC Design Flow DFM 22

23 The Value of ADS DFM Technology Designing circuits that will work no matter what First to market First pass success High manufacturing yield (Lower cost per chip) ADS DFM Tools Tremendous amount of time and $$ savings Insensitive to changes in temp and supply voltage Reliable, high quality designs The only EDA company with unique DFM design tools that allow MMIC designers to create and manufacture robust circuits with first-pass success and high yield 23

24 Real MMIC Designs Fabricated on the Same Wafer Actual real-world examples A reticle contains a few circuits, stepped and repeated across the whole wafer Amp1 Amp2 U/C 1 macro U/C 2 macro 1) Used a standard design technique 2) Used a DFM Based design technique All designs went through the same Wafer Fab Process 24

25 K-Band Up Converter Wafer Probed Results Mixer 1 Mixer 2 X-band Amp1 K-band X-band Amp2 K-band Ku-band LO Ku-band LO U/C 1 Macrocell / Standard Design U/C 2 Macrocell / DOE Based Design 25

26 Wafer Probed Results Note: Foundry process shifted to the left during this run. Amp2 shift was less sensitive to this shift Amp1 Standard Design Amp2 DFM based Design Amp1 Amp2 26

27 Understanding the Difference Amp2 Amp1 27

28 ADS Matching Tool Helps find Robust & High Yield Networks 19 different networks with different topologies to choose from They all include DFM analysis! 28

29 Using DFM Techniques On a Demo One-Stage LNA Yield Sensitivity Histogram (YSH) to components 29

30 Using DFM Techniques to Transform One-Stage LNA into a Robust Design with High Yield 30

31 ADS Complete Front-to-Back MMIC Design Flow PA Verification 31

32 PA Verification to Wireless Standards Realistic input signals and test benches for all wireless standards WIMAX Transmit Source PA Verification to wireless Standards PA The most accurate and only tool set that provides true circuit verification to all wireless standards pre- and post-fabrication. Helps designers not only test and verify their designs, but also get the most performance out of their circuits. 32

33 An Example WIMAX PA EVM verification and spectrum Insert WiMAX PA into the Wireless Test Bench and press simulate 33

34 An Example WIMAX PA Small signal gain, S11 and Pin/Pout 34

35 Example WiMAX PA EVM Verification Fast verification! Simulation Time 20 minutes Fast Cosim (AVM) Not Used Simulation Time < 20 seconds Using Fast Cosim (AVM) 35

36 Example WiMAX PA Spectrum 36

37 Swept EVM and Statistical Analysis Easy Statistical Analysis on PA Verification at the System Level 50 Monte Carlo trials 10 minutes 2GB RAM Sweeping EVM as a function of Input Power, Pin 37

38 ADS Complete Front-to-Back MMIC Design Flow Part II Physical Design 38

39 Advanced Backend Physical Design Capability Schematic/Layout Synchronization ADS 2008 Layout Synchronization Simulating Layout in Schematic page Layout / Schematic Design Differences Physical Connectivity Engine OR Lay-con DRC Planar and 3D EM Tools 39

40 Advanced Backend Physical Design Capability Total flexibility with three synchronization modes ADS provides three different synchronization modes between schematic & layout, providing optimum flexibility in the development of MMICs Designers are not constrained by always having schematic and layout automatically synchronized Ability to switch back and forth between the three different modes Allows you to efficiently and accurately fit many elements designs into small areas. The result is a smaller die size and lowered overall cost per chip. 40

41 Advanced Backend Physical Design Capability Schematic/layout look-alike Original Schematic Synchronized Layout for Momentum EM Simulation & Optimization Layout look alike Used in the schematic page as: Full or Sub-network Graphical Cell Compiler with parameterized variables Advanced Model Composer with parameterized variables 41

42 New Transparency to Layer Configuration Improved layout visibility for multilayer MMIC designs Easier to see through the multilayer designs such as traces, grounds, and vias Before After 42

43 Advanced Backend Physical Design Capability Design differences Identifies Components in Layout not in Schematic Components in Schematic not in Layout Parameter Differences Nodal Mismatches 43

44 Advanced Backend Physical Design Capability Check layout vs. schematic and check layout for errors Custom LVS Utility Program 44

45 Advanced Backend Physical Design Capability Check physical connectivity (LayCon) Physical Connectivity Engine allows you to check your layout for any errors. This capacitor is not shorted. It is fine. This capacitor is shorted. It is shown by the metallization run. 45

46 Advanced Backend Physical Design Capability Check physical connectivity (LayCon) Problem Fixed 46

47 Advanced Backend Physical Design Capability Building reticles in ADS (TriQuint Foundry) 47

48 Advanced Backend Physical Design Capability EM simulation with Momentum and EMDS Spiral inductors are the largest devices on-chip and probably least understood. Spiral Inductors, Transformers, and Transmission Lines are important to model accurately in MMIC. Bond wires and package effects are very important to design to and verify to. Remember, the MMIC doesn t end at the chip level. Both Momentum Planar EM simulator and EMDS 3-D finite-element EM simulator are both seamlessly integrated in ADS and can insure your design success. 48

49 Momentum EM Simulation Accuracy and speed pays off Industrie s first 64-bit 3D planar EM solver Improved thick conductor modeling: Now includes the addition of horizontal current modeling on the metal interconnects sidewalls as well as the vertical currents. Adding a new Krylov Iterative Solver: Momentum now hosts three unique solvers to address the varying degrees of EM modeling complexity and extend EM modeling efficiencies across a much wider application coverage area. 49

50 LNA Layout & Momentum Simulation on the OMN of our one Stage LNA 50

51 LNA Simulation Results with Momentum Simulation on the OMN of LNA No Change in NF Momentum Circuit model 51

52 Momentum Optimization on LNA OMN 52

53 Momentum Optimization on LNA OMN Meshing during Momentum dimulation and optimization Output matching metwork parameterized layout look-alike component for EM simulation and optimization 53

54 Momentum Optimized Results Results achieved by reduction in line lengths and the series spiral inductor 54

55 EMDS Integration into ADS 3D Features includes 3D JDEC Bond Wire EMDS is now Seamlessly Integrated in ADS Follows the Momentum Model 55

56 Advanced 3D EM Simulation with EMDS Co-simulation of a balanced MMIC Amp inside a 10-pin package Efficient approach to package modeling is to Co-simulate the MMIC circuit design inside the package using EMDS in ADS. EMDS accurately models package parasitic and its effects on the MMIC Chip Performance. Co-Simulation / Optimization automatically adjusts the design s parameters and brings back its performance by counteracting the effect of the package parasitic 56

57 True MMIC Verification prior to Manufacturing Our LNA Example True MMIC design verification prior to manufacturing is done by co-simulating the MMIC inside the package and with bond wires using EMDS in ADS 3D View 57

58 True MMIC Verification Before Manufacturing You can co-simulate and optimize the response in the same way as in Momentum. 58

59 Advanced Backend Physical Design Capability Design Rule Check (DRC) Automatically Finds the Rules file location Automatically Loads the Rules file All you have to do Is to click on Run 59

60 Advanced Backend Physical Design Capability Design Rule Check (DRC) Users now can Load, Run, Compile, and View Results in one mouse click. Users can sort errors and can choose to view any error first. DRC provides exact error coordinates and lets you pan and zoom. 60

61 3D Pre-Viewer with Z-scale Expansion Scale up substrate thicknesses to easily visualize a complex 3D layout ADS 3D View Up-scaled View 61

62 3D Previewer with Cut Plane Cut through the layout to easily visualize a complex 3D layout 3 cut planes on XY, YZ, and XZ plane Flip Cut positive or negative cut No Cut Plane Enabled YZ Cut Plane Enabled 62

63 New Drag and Drop From Project View Window Drag and drop existing designs to the current design Both for Schematic and Layout Drag and drop designs directly from the Project View window No need to browse the library browser Drag and Drop 63

64 Trace With Automatic Via Insertion Easier to change trace layers with hot keys, comma(,) and period(.) Automatically inserts the via when changing layers. 3D view 2D view 64

65 ADS Data Display is Another Design Tool Post Processing and Data Display RF specific functionality and flexibility to post-process and display data, for better insight to the circuit behavior. A design tool helps achieve faster design cycles 65