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A Computer-Aided Design and Synthesis Environment for Analog by Geert Van der Plas

By Geert Van der Plas

In the 1st half the AMGIE analog synthesis procedure is defined. AMGIE is the 1st analog synthesis method that automates the total layout method from requisites right down to demonstrated structure. it's precise to the layout of moderate-complexity circuits. It is determined by layout and circuit wisdom kept within the tool's libraries and will be utilized by either beginner and skilled analog designers in addition to system-level designers. the internal workings are defined intimately, with (practical) examples to illustrate how the carried out algorithms and methods paintings. Experimental effects bought with the AMGIE approach are said, together with real fabricated and measured circuits.

The moment process, i.e. the systematic layout of high-performance analog circuits, is mentioned within the moment a part of the e-book. This procedure is supported by way of instruments to spice up the productiveness of the clothier. An instance of this sort of software is Mondriaan, that's designated in the direction of the automated format iteration of hugely average analog blocks. The proposed systematic layout method is then utilized to the layout of high-accuracy current-steering electronic to analog converters (DACs). the whole layout course is mentioned intimately.

Both complementary ways bring up analog layout productiveness. layout instances of different layout experiments undertaken are mentioned through the publication to illustrate this.

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The disadvantage however is that no interdependencies between different performances are taken into account, and therefore that some topologies may pass the boundary checking filter but cannot meet the combined set of specifications in the end. 2. Some heuristics based on the relative position of the specification values within the feasible performance intervals or on the maximum size of the intervals’ intersection can be applied to perform already an initial ranking of the surviving topologies.

Other examples are the schematic editor, layout editor, netlist editor, datasheet editor, design history browser, etc. For further snapshots of these editors/viewers, the reader is referred to the AMGIE user manual [VdPlas 96a]. The modular implementation approach that has been chosen, makes it possible to replace 38 The AMGIE Analog Synthesis System existing point tools with compatible, alternative implementations (which could even be manual). The strength of the AMGIE synthesis system is that for all design steps automated solutions have been implemented.

He/she is in full control of the design process through the user interface and leaves the point tools of the AMGIE system solve all design problems (topology selection, sizing, verification and layout generation). An experienced analog designer can also use the AMGIE system in this mode: (s)he wants a low-challenge analog design solved quickly in this case. 2. the library developer or expert user. The AMGIE system relies on libraries for its operation. Library developers provide this information.

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