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Substrate Via in SiGe BiCMOS/CMOS - RF Cafe Forums

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dipak
Post subject: substrate via in SiGe BiCMOS/CMOS Posted: Mon Dec 18, 2006 8:08 am

Captain

Joined: Tue Nov 14, 2006 7:21 pm
Posts: 9
Location: Nagpur(M.S)
Are there any substrate vias in SiGe BiCMOS/CMOS process for grounding?

If not how should we provide groundung to the layout?


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jom
Post subject: Posted: Fri Jan 26, 2007 2:43 am

Captain


Joined: Fri Jan 26, 2007 2:40 am
Posts: 14
Are there any substrate vias in SiGe BiCMOS/CMOS process for grounding?

I would hope so.

If not how should we provide groundung to the layout?

You can use substrate ties to provide ground to the (usually) p- substrate and/or use I/O pins to ground the chip. Using plenty of substrate ties can also help prevent latch-up in certain cases if high currents are involved.

jom







Posted  11/12/2012

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