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Jonathan Harris

IMS 2014: Day 1 From an Applications Engineer Perspective

Jonathan Harris
jonharris0
jonharris0
6/30/2014 8:53:59 AM
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Blogger
RE: Day 1 from an Applications Engineer Perspective.
Very good points.  It is definitely a benefit.  I enjoy talking with customers and letting them know about our products as well as hear about what they are working on.  It is also interesting to see students drop by who have such an interesting (and sometimes simplistic) view of the world.

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yalanand
yalanand
6/27/2014 6:55:09 AM
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Newbie
RE: Day 1 from an Applications Engineer Perspective.
Shows like these always benefit you as a worker because you not only get to showcase your projects, You get to meet new people who can educate you more on the kind of work you do as an engineer. For a student you can use this opportunity to go and learn good ideas and ways of helping you get a job after you graduate. You get to experience the work atmosphere.

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jonharris0
jonharris0
6/26/2014 3:11:13 PM
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Blogger
Re:IMS 2014: Day 1 From an Applications Engineer Perspective
Thanks for the comments.  One of the advantages of GSPS ADCs is the reduction in required front end components.  Some designs may allow for this while others may not.  In some cases the converters on them market are interleaved actually.

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SunitaT0
SunitaT0
6/26/2014 5:38:23 AM
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Master
Re:IMS 2014: Day 1 From an Applications Engineer Perspective
Jonathan, thanks for sharing your experience. ADC offerings eliminates the need to interleave multiple A/D converters for the required performance along with reconfigurable platforms. Direct RF sampling and elimination of down conversion allow for more front-end configurations.

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samicksha
samicksha
6/26/2014 2:30:34 AM
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Student
Re: Spectrum Analyzer
Yes I agree you completely, it can lead to a non-monotonic transfer function in a DAC.

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jonharris0
jonharris0
6/25/2014 8:27:51 AM
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Blogger
Re: Spectrum Analyzer
I am not an expert on the design of the handheld spectrum analyzers, but from a high speed ADC standpoint, most COTS ADCs today do not typically have missing codes.  A tell-tale sign though is if the DNL is greater than 1 LSB, the converter would have missing codes. 

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samicksha
samicksha
6/25/2014 1:59:42 AM
User Rank
Student
Spectrum Analyzer
When we talk of Handheld  spectrum analyzers they tend to offer a limited capability, wherein chances of codes getting missed out is higher, curious to see if this ADC can help in improving the device.

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More Blogs from Jonathan Harris
In this blog we’ll take this one step further and look at driving the ADC power supplies directly from a DC/DC converter.
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.
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