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Analog Behavioral Modeling with the Verilog-A Language by Dan FitzPatrick, Ira Miller

By Dan FitzPatrick, Ira Miller

Analog Behavioral Modeling With The Verilog-A Language offers the IC dressmaker with an advent to the methodologies and makes use of of analog behavioral modeling with the Verilog-A language. In doing so, an summary of Verilog-A language constructs in addition to purposes utilizing the language are offered. moreover, the booklet is observed via the Verilog-A Explorer IDE (Integrated improvement Environment), a restricted power Verilog-A more suitable SPICE simulator for extra studying and experimentation with the Verilog-A language. This ebook assumes a uncomplicated point of realizing of using SPICE-based analog simulation and the Verilog HDL language, even though any programming language history and a bit decision should still suffice.
From the Foreword:
`Verilog-A is a brand new layout language (HDL) for analog circuit and structures layout. because the mid-eighties, Verilog HDL has been used greatly within the layout and verification of electronic structures. despite the fact that, there were no analogous high-level languages to be had for analog and mixed-signal circuits and platforms.
Verilog-A presents a brand new measurement of layout and simulation strength for analog digital platforms. formerly, analog simulation has been dependent upon the SPICE circuit simulator or a few spinoff of it. electronic simulation is basically played with a description language comparable to Verilog, that is well known because it is straightforward to profit and use. Making Verilog extra necessary is the truth that a number of instruments exist within the that supplement and expand Verilog's services ...
Behavioral Modeling With the Verilog-A Language offers a great advent and beginning for college kids and practising engineers with curiosity in figuring out this new point of simulation know-how. This e-book includes various examples that improve the textual content fabric and supply a important studying software for the reader. The textual content and the simulation application incorporated can be utilized for person examine or in a school room atmosphere ...'
Dr. Thomas A. DeMassa, Professor of Engineering, Arizona nation University

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Hence, to access the potential across the branch, use: V(n1, n2) In other words, accessing the potential from a node or port to a node or port defines the implicit branch. Accessing the potential on a single node or port defines an implicit branch from the node or port to ground. So, V(n1) 1. A branch is formed implicitly by use within the behavioral definition. 32 Verilog-A HDL Probes, Sources, and Signal Assignment accesses the potential on the implicit branch from n1 to ground. Likewise, the flow of electrical is bound to the nature definition of Current, which defines an access function of I.

1 Convergence To determine when iterative methods such as Newton-Raphson have converged to a sufficiently accurate solution, tolerance criteria is used. , Conservation of the constraints on charges, fluxes, currents, potentials, etc. within the system for KFL and KPL are satisfied: where is the iteration of the solution for x. The reltol within the convergence criteria, is a global option of the simulation. The and are associated with the type, or nature of the unknown x. 1 Introduction The Verilog-A language allows analog and mixed-signal systems to be described by a set of components or modules and the signals that interconnect them.

Access functions within expression can be used within linear, nonlinear, algebraic, or dynamic functions and become probes in the equation formulation. Branch contribution statements implicitly define source branch relations. The branch is directed from the first node of the access function to the second node. If the second node is not specified, the second node is taken as the ground or the reference node. 1 Probes Probes are formed from access functions whenever the access function is used in an expression.

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