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penchal_gv
Joined: 04 Feb 2006
Posts: 20
Helped: 1
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 12 Apr 2007 5:17 twin and tripple well process |
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Hi Friends,
I would like to know about,
1. what is meant by twin and tripple well process? and what is difference btw them?
2. where we use these processes apart from nwell process?
Thanks,
penchal
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khouly
Joined: 20 Oct 2003
Posts: 2469
Helped: 341
Location: EGYPT
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| 12 Apr 2007 8:09 Re: twin and tripple well process |
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the twin well process is the process that contain 2 wells N and P
the tripple well process that contain another well implemented in the wells
like u have N well , implement a P well in it
it is usually used for RF circuits to achieve good isolation
khouly
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aicder
Joined: 13 Jan 2005
Posts: 17
Helped: 3
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| 13 Apr 2007 9:08 twin and tripple well process |
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for the tripple well process, Deep N-well was the third, usually. it can isolate p-well from P-substrate, so the p-well would not be tied to ground, it can be any potential. this is very useful for some circuits.
for example, in the flash circuit, the tripple well process is must, because some circuits operate in the negative potential.
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