HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
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.  

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?

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

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.

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   7/14/2013 10:52:46 PM
NO RATINGS
glad we both figured it out.



Partner Zone
Latest Analysis
The damage to Sony from the cyber attack seems to have been heightened by failure to follow two basic security rules.
Voting in Round 4 of our annual Gadget Freak of the Year contest is now open.
Reshoring is picking up steam, but it's not outpacing the overall continuing growth in outsourcing.
Here's a variety of views into the complex production processes at Santa's factory. Happy Holidays!
The Beam Store from Suitable Technologies is managed by remote workers from places as diverse as New York and Sydney, Australia. Employees attend to store visitors through Beam Smart Presence Systems (SPSs) from the company. The systems combine mobility and video conferencing and allow people to communicate directly from a remote location via a screen as well as move around as if they are actually in the room.
More:Blogs|News
Design News Webinar Series
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
11/6/2014 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.
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 © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service