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Jonathan Harris

IMS 2014: Day 3 From an Applications Engineer Perspective

Jonathan Harris
jonharris0
jonharris0
6/30/2014 8:55:59 AM
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Blogger
RE: that PHD.
Indeed, samicksha! :-)  I'd like to see that 20GSPS ADC as well!  It would definitely be an achievement.  I think it is on the horizon but still a few years away.  It is amazing to look back over the last 20 years to see how far we've come and to think about what the next 20 will look like...

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samicksha
samicksha
6/30/2014 4:51:09 AM
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Student
RE: that PHD.
I am amazed and curious to see how this high speed ADC should look like, i.e. 20GSPS ADC, sounds like an acheivement.

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yalanand
yalanand
6/27/2014 6:54:10 AM
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Newbie
RE: that PHD.
It's always a good idea having these shows because you get to interact with many people who you can get to exchange ideas with. From students; to professors and other workers from different companies. You get to social with them and get to learn things that can help you in accomplishing your duties as an engineer and worker from a specific company. You find that you will get to be more productive in fulfilling your duties.

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jonharris0
jonharris0
6/26/2014 3:55:27 PM
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Blogger
Re: that PhD...
Good point RedDerek, you never know when we might cross paths again.


Thanks Sunita!  I was very happy and am thoroughly enjoying the iPad.  I didn't realize how useful they could be.  Thanks for the kind words as well.  I was hopeful that folks would enjoy reading about the show on a more personal level.  I had a lot of fun writing these blogs and am happy to hear you enjoyed them. :-)

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RedDerek
RedDerek
6/26/2014 2:32:16 PM
User Rank
Master
that PhD...
Johnathan,

Keep that PhD in mind. If they are that enthusiastic, they may just discover that path to 20 GSps. Innovation develops on new technology.

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SunitaT0
SunitaT0
6/26/2014 6:24:06 AM
User Rank
Master
Congratulations
Jonathan, Congratualtons for your ipad mini. Thanks for sharing your entire IMS experience and I enjoyed going through these posts.

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More Blogs from Jonathan Harris
Previously in this blog series we looked at using a DC/DC converter (switching regulator) in combination with an LDO to drive the power supply inputs to an ADC. What we found was that using the DC/DC converter to step down the input voltage for the LDO was a much more efficient way to drive the power supply inputs to an ADC.
We look at using a DC/DC converter along with an LDO to drive the ADC power supply inputs.
I thought it would be good to continue looking at the example I gave in my last blog where we looked using fewer LDOs and combining power supply rails on an ADC while maintaining isolation with ferrite beads.
There are some disadvantages when driving low input supply voltages, where multiple LDOs may be required.
Keeping the power supply inputs on separate domains can minimize crosstalk and make it much harder for noise to interfere with ADC performance.
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