User manual CADENCE DESIGN SYSTEMS CADENCE SIMULATION FOR PCB DESIGN DATASHEET

[. . . ] Using advanced analysis capabilities, designers can automatically maximize the performance of circuits. CadenCe simulation teChnology for PCB design Cadence simulation technology for PCB design provides a full-featured analog simulator with support for digital elements to help solve virtually any design challenge--from high-frequency systems to low-power IC designs. The powerful simulation engine integrates easily with Cadence PCB schematic entry solutions, improving time to market and keeping operating costs in check. An interactive, easy-to-use graphical user interface provides complete control over the design process. [. . . ] The tools also enable users to measure performance characteristics of a circuit using built-in measurement functions and creation of custom measurements. For data display, additional capabilities allow plotting of both real and complex functions of circuit voltage, current, and power consumption, including Bodé plots for gain and phase margin and derivatives for small-signal characteristics. (See Figure 2. ) stimulus Creation Access built-in functions that can be described parametrically or draw piecewise linear (PWL) signals freehand with the mouse to create any shape stimulus. Create digital stimuli for signals, clocks, and buses; click-and-drag to introduce and move transitions. miXed analog/digital simulation Integrated analog and event-driven digital simulations improve speed without loss of accuracy. A single graphical waveform analyzer displays mixed analog and digital simulation results on the same time axis. Digital functions support 5 logic levels and 64 strengths, load-dependent delays, and hazard/race checking. Allegro AMS Simulator and PSpice® simulation also feature propagation modeling for digital gates and constraint checking (such as setup and hold timing). www. ca de nce . com CA D ENC E SI MULATI O N FO R PCB DESI G N 2 model liBrary Users can select from more than 18, 000 analog and mixed-signal models of devices made in North America, Japan, and Europe. Also included are more than 4, 500 parameterized models for BJTs, JFETs, MOSFETs, IGBTs, SCRs, magnetic cores and toroids, power diodes and bridges, operational amplifiers, optocouplers, regulators, PWM controllers, multipliers, timers, and sample-and-holds. model editing It's easy to extract a model of a supported device type--simply enter the required data from the device's datasheet. magnetic transformers and DC inductors, and generate simulation models for transformers and inductors that can then be used in Allegro AMS Simulator circuits. The Magnetic Parts Editor also allows designers to generate data required for manufacturing the transformers or inductors. The manufacturer's report that is generated by MagDesigner after the completion of the design process contains the complete data required by a vendor to develop the transformer for commercial use. enCryPtion The encryption feature allows models to be encrypted using 56-bit DES algorithm. Figure 2: Cadence simulation technology for PCB design provides a complete simulation environment including simulation waveform analysis with cross-probing and bias results displayed on the schematic BehaVioral modeling Functional blocks are described using mathematical expressions and functions, which allows designers to leverage a full set of mathematical operators, nonlinear functions, and filters. Circuit behavior can be defined in the time or frequency domain, by formula (including Laplace transforms), or by look-up tables. Error and warning messages can be specified in different conditions. Users can easily select parameters, which have been passed to subcircuits in a hierarchy, and insert them into transfer functions. New behavioral capabilities include mathematical functions like in(x), exp(x), and sqrt(x). slPs Cadence simulation technology and the MathWorks' MATLAB Simulink package integrate two industry-leading simulation tools into a powerful co-simulation environment (SLPS). Simulink is a platform for multi-domain simulation and modelbased design of dynamic systems. The SLPS integration allows designers to perform system-level simulations that include realistic electrical models of actual components. Design and integration problems can be discovered much earlier in the design process, reducing the number of prototypes needed to execute the design. SLPS integration also lets designers of electro-mechanical systems-- such as control blocks, sensors, and power converters--perform integrated system and circuit simulation. [. . . ] Designers can use Smoke to compare circuit simulation results to a component's safe operating limits. If limits are exceeded, Smoke identifies the problem parameters. It can also be used for creating, modifying, and configuring derate files for use with Smoke analysis. [. . . ]