By Dan FitzPatrick, Ira Miller
Analog Behavioral Modeling With The Verilog-A Language offers the IC fashion designer 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 provided. moreover, the publication is followed by way of the Verilog-A Explorer IDE (Integrated improvement Environment), a constrained power Verilog-A superior SPICE simulator for additional studying and experimentation with the Verilog-A language. This ebook assumes a easy point of figuring out of using SPICE-based analog simulation and the Verilog HDL language, even if 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 generally within the layout and verification of electronic platforms. despite the fact that, there were no analogous high-level languages to be had for analog and mixed-signal circuits and structures.
Verilog-A presents a brand new size of layout and simulation strength for analog digital platforms. formerly, analog simulation has been established upon the SPICE circuit simulator or a few spinoff of it. electronic simulation is essentially played with a description language equivalent to Verilog, that is renowned because it is simple to profit and use. Making Verilog extra necessary is the truth that numerous instruments exist within the that supplement and expand Verilog's functions ...
Behavioral Modeling With the Verilog-A Language presents a very good creation and beginning for college students and practising engineers with curiosity in figuring out this new point of simulation expertise. This booklet includes various examples that improve the textual content fabric and supply a beneficial studying device for the reader. The textual content and the simulation application integrated can be utilized for person research or in a lecture room setting ...'
Dr. Thomas A. DeMassa, Professor of Engineering, Arizona country collage
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Additional info for Analog Behavioral Modeling with the Verilog-A Language
For the physical represen- 24 Verilog-A HDL Types of Analog Systems tation of the multiplier, either the Verilog-A representation or the Spice subcircuit netlist can be used. Thus, in general, mixed levels of behavioral and structural descriptions can be used in the description and analysis of the system. 4 Types of Analog Systems The structure of the components in an analog system, and behavioral descriptions of those components define the system of ordinary differential equations, or ODEs, that govern the response of the analog system to an external stimulus.
Conversely, a potential probe introduces an infinite impedance path between the two nodes it connects. 2 Sources Sources are formed from access functions whenever the access function appears as a target on the left-hand side of the contribution operator, “<+”. It is a potential source if the branch potential is specified, and it is a flow source if the branch flow is specified. For the following, V(n1, n2) <+ . . ; I(n3, n4) <+ . . 1 1. A branch cannot simultaneously be both a potential and a flow source, though it can switch between them, in which case it is referred to as a switch branch.
2 Branches With conservative systems it is also useful to define the concept of a branch. A branch is a path of flow between two nodes. Every branch has an associated potential (the 26 Verilog-A HDL Types of Analog Systems potential difference between the two branch nodes), and a flow. The reference directions for a branch are as follows: The reference direction for a potential is indicated by the plus and minus symbols at each end of the branch. Given the chosen reference direction, the branch potential is positive whenever the potential of the branch marked with a (+) sign is larger than the potential of the branch marked with a minus (–) sign.
Analog Behavioral Modeling with the Verilog-A Language by Dan FitzPatrick, Ira Miller
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