HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
78RPM
User Rank
Platinum
Re: #240 MEMS Microphone
78RPM   7/14/2013 10:52:46 PM
NO RATINGS
glad we both figured it out.

William K.
User Rank
Platinum
Re: #240 MEMS Microphone
William K.   7/14/2013 9:53:15 PM
NO RATINGS
78RPM, thanks for the clues. I have often been frustrated in my attempts to get infomation about the gadget freak projects. The useful details have always appeared to be withheld, so usually I just abandin the effort to get any details.

78RPM
User Rank
Platinum
Re: #240 MEMS Microphone
78RPM   7/12/2013 4:46:20 PM
NO RATINGS
William K, I discovered that you can get to the build instructions by clicking on the link above the one you probably selected. Go to the most recent Gadget Freak column and look at the links to other Gadget Freak blogs in the right column. Click on #240 and you should get the link that has build instructions.

78RPM
User Rank
Platinum
Re: #240 MEMS Microphone
78RPM   7/12/2013 12:06:55 PM
NO RATINGS
William K, It looks like the Build Instructions have retired from the article. If you wish to send me an email at jjfrigatebird@gmail.com I will reply with the parts list and build instruction, assuming the editor has no objection.

You are correct that the devices are Analog Devices.  The mic is an ADMP504, the difference preamp is an AD8273, and the output amp is an AD8397 configured as a difference amp to handle the balanced line from the preamp stage. The quality of sound is excellent and would probably serve in a recording studio with proper mounting.

Maybe I'll see you in another Digi-Key Design News webinar next week.

Jerry Cogswell

William K.
User Rank
Platinum
#240 MEMS Microphone
William K.   5/31/2013 8:07:06 PM
NO RATINGS
This is a project that is very interesting, even moreso the version using the satellite TV reflector. So where is the information, I would like to build one of them. I did not get the name or model number of the microphone, but it sounds like an Analog Devices type thing. Where is the project build information, please?

Charles Murray
User Rank
Blogger
Nature documentaries
Charles Murray   5/15/2013 7:29:34 PM
NO RATINGS
This technology would be great for nature documentary directors, who must stand 200 yards away from dangerous animals while they record. The low signal-to-noise would enable them to pick up sounds from a distance without a lot of distortion.  



Partner Zone
Latest Analysis
A middle school team from Rochester, Mich., has again nabbed the grand prize in the annual international Future City Competition, which drew students from 37 regions of the United States, as well as from England and China.
The actor captured imaginations and inspired scientists and engineers all over the world in his role as Star Trek's Mr. Spock.
You know you're an engineer if you chuckle whenever anyone says "centrifugal force," or you find yourself at the airport studying the baggage handling equipment.
The word “smart” is becoming the dumbest word around. It has been applied to almost every device and system in our homes. In addition to smartphones and smart meters, we now hear about smart clothing and smart shoes, smart lights, smart homes, smart buildings, and every trendy city today has its smart city project. Just because it has a computer inside and is connected to the Web, does not mean it is smart.
Are you being paid enough? Do you want a better job? According to a recent survey Manpower released just before Engineers Week, employers and engineers don't see eye-to-eye about the state of US engineers' skills and experience.
More:Blogs|News
Design News Webinar Series
2/25/2015 11:00 a.m. California / 2:00 p.m. New York
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
12/10/2014 8:00 a.m. California / 11:00 a.m. New York
11/19/2014 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Mar 9 - 13, Implementing Motor Control Designs with MCUs and FPGAs: An Introduction and Update
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  67


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service