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MeasurementBlues
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Attending sessions
MeasurementBlues   1/31/2014 12:57:31 PM
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"I don't expect I'll be able to get to even half of these sessions,"

I missed several that I wanted to attend because of conflicts and prior commitments. Next year, I propose that DesignCon last for two weeks. :-)

MeasurementBlues
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Re: Hang on to your hats
MeasurementBlues   1/31/2014 12:55:45 PM
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@Great_white_north

Well the present pays the bills. So, keep specfiying through hole resistars for as long as you can get them, which will be a long time yet.

MeasurementBlues
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Re: Hang on to your hats
MeasurementBlues   1/31/2014 12:54:10 PM
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We've been hearing for years that FR4 is dead, but it's the gift that just keeps on giving. Why? Because engineers keep finding ways to get enough signal integrity out of it and avoud going to more expensive laminates. Thins the pre-emphasis, smarter PCB design, and better simulation tools have let that happen. Plus, not everyone needs the highest data rates. It's really just at the data centers and server farms. the rest of us can ive with 1Gbps and even slower. Case in point, a tutorial on jitter at DesginCon was attended by over 200 people. There were plenty of people at DesginCon who are now just trying fr figure out how to design for 10Gbps.

Great_White_North
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Re: Hang on to your hats
Great_White_North   1/29/2014 5:33:55 PM
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Some of us unfortunaly live in the last century :-(

I spent a large part of my workday specifying through hole resistors and diodes for a CCA which we about to start a new production run of.


Instead of dreaming about the future, I dream about the present.

rick merritt
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Re: Hang on to your hats
rick merritt   1/29/2014 12:31:27 PM
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I tried to cover new board materials a bit around DesignCon last year. You should also check our sister pub EDN and our PCB Designline (tab above) for more.

Scott.Ferguson
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Re: Hang on to your hats
Scott.Ferguson   1/28/2014 12:06:37 PM
Seems to me if someone could invent and patent an FR4 replacement that was cost effective they could make profits as large as some countries' GDP. What we need is one of these new materials to also be more effective at insulating homes or going into auto bodies to get manufacturing volumes up and unit cost down. Has EE Times published any articles on who's driving research in this area?

rick merritt
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Hang on to your hats
rick merritt   1/28/2014 1:05:02 AM
FR4 is sooo last century!



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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