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Hi,
I am planning to tape out the layout as flip chip. I have few doubts to be cleared. Please someone help me....
1) How is flip chip pad placement decided.
2) Does flip chip all pads has to be connected to ESD.
3) Do we require seal ring for the chip.
4) Do we require the corner cells for...
Hi
When I am placing a instance from my library into a new layout I am getting an box which has text "PcellEvalFailed".
But I can open the cell without any errors.
Please help me out.
--
krrao
Hi prcken,
You said layout the PMOS & NMOS as ESD devices. I am new to ESD layouts, will you please explain the 1st method elobarately.
--
warm regards,
krrao.
Hi eladla,
Can you please elobarate the 2nd part of your reply. "we want the regular thyristor, made of NPNP (this is NPN and PNP interleaved), to separate to NPNPNPNP and this combats
the mutual beta factor boosting happening in the thyristor. For this we added both a P and N guard ring."
Hi All,
If I have a inverter connected directly my pad, then how do I layout this inverter protecting from ESD and Latch Up issues ? please explain in details.
consider for example W/L of PMOS = 200/0.5 amd W/L of NMOS = 75/0.5.
--
warm regards,
krrao.
Hi All,
Why do we use dummies for Resistors? For poly resistor we use dummies at the ends to avoid poly etching.
Is it necessary to use dummies for N-well resistors also? if yes, then why?
--
warm regards,
krrao.
Hi All,
Why are the double guard rings used? For a PMOS driver layout, what if I use a single guard ring? What are the advantages of using double guard ring?
--
warm regards,
krrao.
Hi All,
What are the design specifications a layout engineer must know about the BGR and LDO circuits before laying out them apart from the layout constaints.
--
Warm Regards,
krrao.
Hi All,
I am using Tanner L-Edit for Layouts and Cadence's Dracula for the verification. Can anybody can help me out in how to interface the Dracula with Tanner.
Tanner works in Windows & Dracula in Linux.
Pls if any body can provide me the detailed step by step procedure on verifiying...
Hi All,
I am using Tanner L-Edit for Layouts and Cadenc's Dracula for the verification. Can anybody can help me out in how to interface the Dracula with Tanner.
Tanner works in Windows & Dracula in Linux.
Pls if any body can provide me the detailed step by step procedure on verifiying (DRC...
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