HSPICE Integration to Cadence Virtuoso Analog Design Environment

440 Pages·2011·15.08 MB·English

HSPICE® Integration to
Cadence® Virtuoso®
Analog Design Environment
User Guide
Version E-2010.12, December 2010
Copyright Notice and Proprietary Information
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Compiler, DesignWare, Formality, Galaxy Custom Designer, HAPS, HapsTrak, HDL Analyst, HSIM, HSPICE, Identify,
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ii HSPICE® Integration to Cadence® Virtuoso® Analog Design Environment User Guide
E-2010.12
Contents
Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Inside this User Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
The HSPICE Documentation Set. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Customer Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1. Quick-Start Tutorial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Task 1: Start Up the Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Task 2: Configure Your Design for Netlisting . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Task 3: Review Available Analyses Windows. . . . . . . . . . . . . . . . . . . . . . . . . . 26
Task 4: Set Up Outputs and Explore the Plotting Assistant . . . . . . . . . . . . . . 32
Task 5: Load a State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Task 6: Create a Netlist File. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Task 7: Run a Simulation and Use the Plotting Assistant . . . . . . . . . . . . . . . . 40
Task 8: Loading and Running a Verilog-A Example. . . . . . . . . . . . . . . . . . . . . 44
Task 9: Set Up and Run a Monte Carlo Simulation . . . . . . . . . . . . . . . . . . . . . 46
Task 10: Run a Corner Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Task 11: Run an RF Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Task 12: Run an Optimization Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
2. Updating Libraries and Tool Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Library Conversion Script. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Running the Library Update Utility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
HSPICE and analogLib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Splitting analogLib into 3 Output Libraries. . . . . . . . . . . . . . . . . . . . . . . . 80
HSPICE Components Added or Converted. . . . . . . . . . . . . . . . . . . . . . . 80
Adding the HSPICE Simulator to the Tool Filter. . . . . . . . . . . . . . . . . . . . . . . . 92
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3. Environment Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Environment Console. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Menus — Environment Console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Verilog-A Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Using the HSPICE Verilog-A Compiler by Default . . . . . . . . . . . . . . . . . . 107
4. Analysis Setup and Design Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
HSPICE Integration Analyses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Multi-Dimensional Sweeps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Transient Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Transient Noise Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
DC Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
AC Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Operating Point Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Noise Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Discrete-Fourier Transform Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Linear Network Parameter Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
.NOISE as Part of a.LIN Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
DCMatch Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
ACMatch Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Loop Stability Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Setting Up and Running a Simple LSTB Analysis . . . . . . . . . . . . . . . . . . 133
Running LSTB Monte Carlo, Corner, and Parametric Analyses . . . . . . . 134
Pole/Zero Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Simulating and Plotting P/Z Results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Other Features Supported in a PZ Analysis. . . . . . . . . . . . . . . . . . . . . . . 148
Design Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
5. Saving-Plotting Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Delete. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
To Be Saved. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
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To Be Plotted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Save Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Saving and Restoring a List of Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Saving a List of Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Restoring a Saved List of Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
6. Running Simulations and Using Control Options . . . . . . . . . . . . . . . . . . . 161
Simulation Menu Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Netlist and Run. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Run. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Netlist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Output Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Convergence Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
7. Printing and Plotting Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Results Menu Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
HSPICE Plotting Assistant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Results > Plot Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Results > Direct Plot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Results > Print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Results > Annotate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Results > Save, Select, Delete. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Results > Printing/Plotting Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
8. Monte Carlo in the HSPICE Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Accessing and Setting Up Monte Carlo Analysis. . . . . . . . . . . . . . . . . . . . . . . 200
Configuring the Setup Tab to Run a Monte Carlo Simulation . . . . . . . . . . . . . 200
Setting Up Multiprocessing of Monte Carlo Runs . . . . . . . . . . . . . . . . . . 202
Using the Options Tab of the HSPICE Monte Carlo Analysis Form. . . . . . . . . 203
Setting up Measurements, Post-Plotting, and Analyzing the Simulation Results Using
the Outputs Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Measurements Pane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Simulation Pane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
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Outputs Pane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Measurement Variation Statistics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Other Features Supported in the Monte Carlo Analysis Form. . . . . . . . . . . . . 210
9. Corners Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Launching the Corner Analysis Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
HSPICE Corner Analysis Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Setting Up a Corners Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Specifying Design Variables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Setting Up Measurements for Corners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Loading Measurements for Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Running Corner Simulations and Using the Outputs Tab . . . . . . . . . . . . . . . . 227
Simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Plotting Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Getting Measurements, Plotting and Printing. . . . . . . . . . . . . . . . . . . . . . 231
Other Features Supported in HSPICE Corner Analysis . . . . . . . . . . . . . . . . . 233
10. HSPICE RF Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Accessing and Setting Up an HSPICE RF Analysis . . . . . . . . . . . . . . . . . . . . 235
Setting Up the Analysis Tab to Run an RF Analysis . . . . . . . . . . . . . . . . . . . . 236
Using the Options Tab of the HSPICE RF Analysis Form . . . . . . . . . . . . . . . . 239
Available Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Using the Outputs Tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
Running and Post-Processing an RF Simulation. . . . . . . . . . . . . . . . . . . . . . . 245
Post-Simulation Plotting and Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Using the Measure Utility on RF Simulations. . . . . . . . . . . . . . . . . . . . . . 246
Other Features Supported in the HSPICE RF Analysis Form. . . . . . . . . . . . . 247
Current RF Analysis Feature Limitations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
11. HSPICE Optimization Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Accessing and Setting Up an HSPICE Optimization Analysis. . . . . . . . . . . . . 249
Using the Setup Tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Selecting the Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
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Setting Optimization Variables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Setting Up Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Using the Analysis Tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Choosing Analysis and Optimization Type. . . . . . . . . . . . . . . . . . . . . . . . 253
Other Features Supported in the HSPICE Optimization Form. . . . . . . . . . . . . 254
Current Optimization Analysis Feature Limitation . . . . . . . . . . . . . . . . . . . . . . 255
12. HSPICE Measurement Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
Measurement Utility Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
Opening and Using the HSPICE Measurement Utility. . . . . . . . . . . . . . . . . . . 258
Trig/Targ Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
General Functions Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Find/When Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Equation Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Error Function Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Using the Special-Meas. Tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Optimization Syntax—Goal Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Report View Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
13. HSPICE Reliability Analysis (MOSRA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
MOSRA Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Launching the HSPICE Reliability Analysis Window. . . . . . . . . . . . . . . . . . . . 272
Main Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Tabs and Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Setting Up Reliability Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
MOSRA Command Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Setting Up MOSRA Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284
Setting up MOSRA-Related Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Setting up the Outputs Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Simulation Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289
Using the Outputs Plot Control Section . . . . . . . . . . . . . . . . . . . . . . . . . . 289
Plotting and Printing Measurement Variable Results. . . . . . . . . . . . . . . . 294
Displaying Reliability Analysis Degradation Data. . . . . . . . . . . . . . . . . . . 298
Other Features Supported in the HSPICE Reliability Analysis Window . . . . . 301
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14. HSPICE Violation Check (.BIASCHK). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
Invoking and Setting up Violation Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
GUI Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Example Monitoring Setups. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Setting Up.BIASCHK Commands and Options. . . . . . . . . . . . . . . . . . . . 313
Netlisting and Running.BIASCHK Simulations. . . . . . . . . . . . . . . . . . . . . . . . 314
Displaying/Printing Violation Check Results . . . . . . . . . . . . . . . . . . . . . . . . . . 314
HSPICE Violation Details Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
15. Distributed Mode—Monte Carlo/Corner Analyses . . . . . . . . . . . . . . . . . . . 321
HSPICE Distributed Jobs Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321
HSPICE Monte Carlo Distributed Simulation. . . . . . . . . . . . . . . . . . . . . . . . . . 323
HSPICE Corner Analysis Distributed Simulation. . . . . . . . . . . . . . . . . . . . . . . 328
A. Adding a CustomExplorerTM Menu to the HSPICE Integration. . . . . . . . . 331
Updating the HSPICE.menus File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Sample HSPICE.menus Files for Versions 51 and 61. . . . . . . . . . . . . . . . . . . 334
Version 51 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Version 61 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
B. OCEAN API Functions for HSPICE Monte Carlo Analysis . . . . . . . . . . . . 365
Using the HSPICE-Provided OCEAN API for HSPICE Monte Carlo Runs . . . 365
C. OCEAN API Functions for HSPICE RF Analysis . . . . . . . . . . . . . . . . . . . . 373
Using the HSPICE-Provided OCEAN API for HSPICE RF Analysis . . . . . . . . 373
1. snpsAnalysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373
2 snpsProbe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 386
D. OCEAN API Functions for HSPICE Corner Analysis . . . . . . . . . . . . . . . . . 391
Using the HSPICE-Provided OCEAN API for HSPICE Corner Analysis. . . . . 391
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E. OCEAN API Functions for HSPICE Optimization Analysis . . . . . . . . . . . . 407
Using the HSPICE-Provided OCEAN API for HSPICE Optimization Analysis. 407
F. OCEAN API Functions for the HSPICE Measure Utility . . . . . . . . . . . . . . . 413
Using the HSPICE-Provided OCEAN API for HSPICE Measure Utility. . . . . . 413
G. OCEAN API Functions for HSPICE MOSRA Analysis . . . . . . . . . . . . . . . . 425
Using the HSPICE-Provided OCEAN API for HSPICE Measure Utility. . . . . . 425
Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 435
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