Engineering and Technology

Cadence (Outil de simulations et analyses) C’est un logiciel, on a utilisé beaucoup de fois en architecture des circuits, simulations, tests et analyses. Il a compose et a consisté de simulateur Orcad , Spice netlist, simulateur PCB, Simulateur Layout,… Aussi on peut faire Analyse DC, AC, Transient,.., montecarlo,… 1-     Analyse DC, on utilisant un amplificateur opérationnel avec ces propriétés en modèle Spice. On analyse les C/CS tension/courant, on va appliqué tension entre -15v et 15v, et aussi -12v et 12v.                                                          Fig-1 Composants OP-Amp, Source de tension, 3 résistors, 1 terre. Choix analyse type DC, -15v,+15v, avec step 1. On a vu le schéma électronique et sa réponse en tension type DC (le choix par un marquer en vert,…comme dans le schéma). ...

DFT design for testability: Testing Basics • Testing and debug in commercial systems have many parts – What do I do in my design for testability? – How do I actually debug a chip? – What do I do once I’ve debugged a chip? • Two rules always hold true in testing/debug – If you design a testability feature, you probably won’t need to use it • Corollary: If you omit a testability feature, you WILL need to use it – If you don’t test it, it won’t work, guaranteed Two Checks • There are two basic forms of validation – Functional test: Does this chip design produce the correct results? – Manufacturing test: Does this particular die work? Can I sell it? • What’s the difference? – Functional test seeks logical correctness • >1 year effort, up to 50 people, to ensure that the design is good – Manufacturing test is done on each die prior to market release • Send your parts through a burn-in oven and a tester before selling them. Testing Costs Are ...