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Ouestion in symbolism... (Read 3718 times)

Turin Junior Member Offline Posts: 28 Greece	Ouestion in symbolism... Mar 04^th, 2010, 6:58am Simple question...Do the mosfet symbols in the image have the same meaning regarding where the substrate is connected? Thanks!
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pancho_hideboo Senior Fellow Offline Posts: 1424 Real Homeless	Re: Ouestion in symbolism... Reply #1 - Mar 4^th, 2010, 7:06am It depends on a definition of MOSFET as three terminal model in model file. See your model file. But I think body is assumed to be connected to "source" in three terminal model of PMOS generally.
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Turin Junior Member Offline Posts: 28 Greece	Re: Ouestion in symbolism... Reply #2 - Mar 4^th, 2010, 9:53am There is no model file...This(1rst) is an image from a book which i'm was wondering if is means it is actually connected to the source as it generally the case...
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aaron_do Senior Fellow Offline Posts: 1398	Re: Ouestion in symbolism... Reply #3 - Mar 4^th, 2010, 5:33pm The one on the left doesn't have the substrate connected yet...
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kumar.g Community Member Offline Posts: 51 Frankfurt, Germany	Re: Ouestion in symbolism... Reply #4 - Mar 5^th, 2010, 12:29am If substrate connection is not shown, then it implicitly means that it is connected to source. In your case both the ckts are different
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Turin Junior Member Offline Posts: 28 Greece	Re: Ouestion in symbolism... Reply #5 - Mar 7^th, 2010, 5:52pm So having a schematic with the first symbolism(with the body pin unconnected) for the pmos and for the nmos where do you assume that the body pin is connected in both cases. �
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