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Re: io cell i/o cell
Hi,
I am doing my MS and plannig to do GPIO cell design as my final year project.So please send if you have any GPIO cell design document.
Regards,
N.Raghavan
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If you have received any I/O cell design Document please send to my email ID...
Re: power dissipation equation
Hi,
what is the Mathematical Prerequisite to understand power dissipation derivation(Not the final equation).Some I knew are integration, differentiation. Also if you have any material for both(Derivation and Mathematical Prerequisite) please share.
Thanks in...
Hi,
I am currently working on Chip on Board design(COB) where Die will be placed on PCB and wire-bond is used for connectivity between die and PCB pad.do you have any similar experience on past.if so please share guide for creating footprint on PCB for die.
Thanks in advance:razz:
Regards...
Hi ,
I am Raghavan.Presently located in bangalore.I have done my Diplama and doing MS-VLSI CAD from manipal.It is UGC approved.Can any one tell me where i can do my part time Phd in VLSI.
Thanks in advance.
Regards,
N.Raghavan
Hi Keith,
Optical PCB is a PCB with buried embedded optical layer.This layer is used for light transmission.This type of technology is used in networking board where the SI losses are more due to copper transmission.
Find some more info in the attachment.
Regards,
N.Raghavan
Hi loosemoose,
Yes. You are right.
But earlier it is based on the criticality of the products (class1, 2 OR 3).So my question here is
1. Why earlier Land pattern based on criticality of the product and now why it is based on density of the product.
2. Is there any IPC standard which considers...
IPC Class and density
Hi all,
In the earlier version of IPC I have seen footprint land pattern calculated based on IPC class (1, 2 Or 3).In the latest one (IPC7531) it is based on density level. Do IPC have any calculation based on considering both (Class and density)
Regards,
N.Raghavan
Hi,
Gmin = Smax – 2J – ÖC2 + F2 + P2 is extracted form IPC -782A for calculating heel min. Can any one tell me how to calculate component tolerance as the datasheet has multiple tolerance. Whereas formula has one value. Please help me
Regards,
N.Rgahavan
fr4 speed rule of thumb
Hi,
The speed at which the electrical energy can travel along the route it known as the propagation velocity, where
VP = speed of light / √dielectric constant
Below is the basic rule(Distance =time x velocity)
Using
Time = 1/3 * rise time
εR = 4 (approximation for...
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