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Chapter 1
Introduction to Eldo
The Eldo analog simulator is the core component of a comprehensive suite of analog and
mixed-signal simulation tools.
Overview of Eldo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Getting Started With the Eldo Simulation Flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Eldo Input and Output Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Eldo Documentation Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Command Line Help. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Documentation Syntax Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Overview of Eldo
The following is a list of the major product features of Eldo:
• Core technology for analog, RF (Eldo RF ), and mixed-signal (Questa ® ADMS ,
ADMS-ADiT ) simulation.
• Simulation of very large circuits in time and frequency domains.
• Eldo Premier option provides increased performance and capacity without sacrificing
accuracy compared to the default Eldo Classic.
• Provides a 3× to 10× gain in simulation speed over other commercial SPICE simulators,
while maintaining the same accuracy.
• Flexible user control of simulation accuracy.
• Transient noise algorithm for noise simulation during transient analysis.
• Advanced analysis options such as pole-zero, enhanced Monte Carlo, DC mismatch.
• Circuit optimization and statistical analysis (design of experiments).
• S and Z-domain generalized transfer functions.
• Reliability simulation with Eldo UDRM (User Defined Reliability Model).
• Flexible DSPF netlist support.
• Behavioral modeling with Verilog-A.
Eldo® User's Manual, 15.3 29