TopSpice 10.49

TopSpice is an integrated computer-aided circuit design software, developed for mixed simulation of analog, digital, and behavioral circuits, based on the industry-standard SPICE simulator.

• Main Functionality: Allows mixed simulation of analog, digital, and behavioral circuits, supporting complex designs from system level down to transistor level. It offers an integrated environment that includes schematic capture, simulation, and graphical analysis of waveforms.
• Design Environment:
  • Allows creating and editing circuits via graphic schematics or SPICE netlist files.
  • Supports multiple schematic sheets (up to 100) and hierarchical designs.
  • Includes a schematic editor with features such as automatic repeating, automatic junctions, symbol generation for subcircuits, and advanced attribute manipulation.
• Simulation:
  • Offers native mixed simulation, combining analog and digital algorithms in a single core with unified event scheduling, optimizing efficiency.
  • Supports digital circuit simulation through an event-driven logic simulator, significantly reducing simulation time compared to analog equivalents.
  • Compatible with PSpice netlists and HSPICE model libraries (with limitations to features implemented in TopSpice).
  • Includes device models such as diodes (levels 0, 1, 3), BJTs (levels 1, 2, 4), MOSFETs (various levels, including BSIM3, BSIM4, EKV), JFETs, GaAs FETs, nonlinear magnetic cores, ferroelectric capacitors, lossy transmission lines, and digital primitives.
• Available Analyses:
  • Bias point, DC sweep, transient, AC sweep, noise, distortion, sensitivity, transfer function, harmonic, temperature, Monte Carlo, worst case, parametric sweep, and "alter" circuit analysis.
  • Advanced frequency response analysis in the time domain for nonlinear circuits and switching mode power supplies.
  • Advanced noise analysis functions with customizable options.
• Behavioral Modeling:
  • Allows analog behavioral modeling using arbitrary equations, mathematical functions, lookup tables, Laplace transforms, frequency response tables, and s-parameters.
  • Supports modeling of linear systems in the frequency domain and common analog functions, such as operational amplifiers, comparators, and Schmitt triggers.
• Model Libraries:
  • Includes a library with over 35,000 analog and digital components, covering discrete devices, analog integrated circuits, optoelectronics, power semiconductors, SMPS design models, cables, vacuum tubes, and more.
  • Compatible with SPICE model libraries from manufacturers and integrated circuit foundries.
• Graphical Post-Processing (TopView):
  • Allows intelligent automatic plotting of simulation data, supporting Bode, Smith, Nyquist, polar graphs, histograms, and eye diagrams.
  • Supports complex waveform expressions, FFT transforms, statistical and performance measurements, as well as graph formatting for publication quality.
• Advanced Features:
  • Supports macromodeling with parameter passing, automatic library searching, convergence assistance algorithms, table modeling for capacitors and inductors, and import of SPICE, IBIS, and s-parameter data models.
  • Offers support for CSDF data files for plotting simulations from other SPICE simulators, like HSPICE and PSpice.
• Compatibility and Performance:
  • 64-bit operation for higher performance and memory capacity.
  • Supports multiple parallel simulation executions and large-scale circuits, limited only by system resources.
• Documentation and Support:
  • Includes comprehensive PDF manuals (over 600 pages), online help, over 400 example circuits, and a model database.
  • Offers technical support via email, free updates for the current version, and discounts on upgrades for future versions.
• Limitations:
  • Compatibility with HSPICE is limited to features implemented in TopSpice.
  • Some advanced features, such as model encryption, may have limited support.