HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
REGISTER   |   LOGIN   |   HELP
Comments
You must login to participate in this chat. Please login.

 

For those still wondering about Starbucks cards, I got one via email message months ago. Be patient

Iron

What kinds of yields are the manufacturers seeing (or accept to go into full production)?

 

When you mentioned Moore's law does not apply, it is from the physical (mechanical) rather than electrical issue with the device, I would expect given the types of materials available one reaches a physical/mechanical limitation. 

 

Good presentation.  Still digesting the phenomena ...

really fascinating

nice presentation

Iron

Hello from San Jose, CA.

HW/Test R&D Engineer.

Preasure, Gyro and accelerometer.

 iPhone, what ever I have in my GMC truck and Electronic BP meter.

Thank you Alissa and Alex for another great session.

Iron

Worked with orientation device, planning to use other types too

Accelerometers, gyroscope

Thank you Alissa and Alex for another great session.  

Iron

It's still somewhat mind-boggling to me how small, fast, and cheap these have become.  

Iron

I would have to say that my personal exposure is predominantly with MEMS accelerometers rather than gyroscopes, but I didn't know that until this lecture.  

Iron

No current or future plans specifically involving MEMS, but reviewing the technology for potential future design uses.  

Iron

Job function -- Hardware and software archotecture and engineering.

Iron

Interesting series. Interested in most of the mems sensor. I use them for low frequency noise detection. Seismic waves, Low Frequency Noise (LFN or Infrasound) from Wind Turbines, trains, roadway vibration etc.

Iron

Interesting presentation.

Iron

Had to log back in timed out

Looking forward to another interesting lecture

ANSWER: WHAT MEMS SENSOR APPS ARE YOU INTERESTED IN?

Blogger

Looking forward to tomorrows session. Thank you!

Iron

There were about 10 posts below, before the lecture started, and there wasn't a single response saying they HAD received one.  Surely it's not just a marketing trick to get us Engineering types to attend.

Iron

@Alex & JayPaxman - I keep getting these e-mails re. gift card, but no actual gift cards so far...

Iron

Thanks.

Alex,  Still there?  Did you notice all the concerns about the promised Gift Card?  It isn't why I attend, but I must say I've been to at least 5 of these that promised a gift card, including a few over a month ago and never have received one.

Iron

Thanks, Alissa! See you tomorrow!

Iron

Ok, I will see you all tomorrow!

Alissa, thank you for a great lecture! (still listening to a recording)

Iron

How 'bout answering the questions about your photo?

Iron

someone asked about specs - all manufacturers list their tested specs, but the problem is there is no current standard for testing MEMS motion sensors.  So you need to read the data sheet with a skeptical eye, and many system integrators choose to evaluate the MEMS motion sensors themselves instead of believing the spec sheet.  I'm not saying the mfgs are dishonest, just that there can be a bit of specmanship.

@Alex - re. currently using/planning to use MEMS... personally, currently learning about MEMS and evaluating different types for my application...

Iron

Thank you, Dr. Fitzgerald

Iron

More on caps to create hermetic cavities: polymer bonds are not hermetic enough for motion sensors, but might be ok for other sensor types.  Most motion sensors are bonded via anodic bonding (glass to silicon) or gold-gold thermocompression.  Some use glass frit, too.  Temps are generally under 400C, but depends on bond type.

ALISSA: I woner if MEMS can be machanically chained. An idea is to build thousands of MEMS solinoids to create things like artificial muscles.

Iron

great prestation. thanks for the infomation.

Thanks for the presentation and responses to questions, Alissa!

Iron

Thanks for a great presentation!

Iron

I will talk about microphones and magnetometers tomorrow.

Dr Fitzgerald - To repeat the others, yes, thanks for your time this week and your very interesting presentations. 

Alex - thanks as well

Digikey - you too !

Iron

Someone asked about EMI interference - the electronics in the MEMS chip will be sensitive to EMI, but not the MEMS themselves (when packaged).

Thanks for the presentation! 

Iron

thanks a lot for the presentation and answers!

Iron

Dr. Fitzgerald, thanks for the presentation. Would we see you at the MIG conference comming up in Pittsburgh?

 

Iron

@ttodorov, who asked about power generation - yes, people are exploring MEMS as energy harvesters.  Most approaches incorporate piezoelectric materials, which can transduce motion/strain into voltage.  These type of harvesters can only produce nW, so not super useful at this point, until electronics become even lower power.

Regarding caps - is cathodic bonding the dominant mechanism of attachment, or can one use a low temp glass frit?  What temp ranges are we speaking of during cathodic bonding and how low can the frits go?  250-300°C?

Do they use a polymer seal and call it 'hermetic'?

 

 

Iron

@eviscito, who asked about MEMS integration in ASICs - it can be done, but it depends on the MEMS architecture.  Some MEMS can not be easily integrated with a CMOS process.  Analog Devices has very successfully come up with a MEMS design that is integrated with their BiCMOS electronics.  Ultimately, it's a cost and yield question.  Most mfgrs. choose to process MEMS and CMOS wafers separately and then integrate at the package level, because it's cheaper!

@Alex - what MEMS devices/applications... - accels, pressure sensors, gyros

Iron

@Alissa - I wonder if somebody is researching using MEMS (as mechanical devices) to generate electricity for picopower applications - like from wind or fluid motion, to work in difficult to reach areas (can't just go and replace the battery at the bottom of the ocean)

Iron

Engineering ways / engineering sensing has developed a sensor for oil exploration. Check out their site.

Iron

Will we see integration of motion sensors on large consumer ASICs soon?

Iron

ALISSA: I wonder why/if the gyros are not/can not be passive with variable inductive springs.

Iron

@GeoSei: yes, there has been a lot of work on MEMS accels for geo applications - seismometers and down-hole applications. I can't think of any mfgrs off hand, but they are definitely out there.

@naperlou, who asked about outputs: most MEMS accels and gyros have standard digital outputs, and i think you can get some accels to provide analog output.  Most mfgrs these days are trying to make their sensors as "application ready" as possible, so they are providing firmware along with the sensors.

@Alex - job function is s/w and h/w with focus on standardization

Iron

Thanks Alissa,

Are you aware of any current geophysical applications for a MEMS sensor?

TIA

Iron

@Steven who posed a question about caps: all MEMS motion sensors need to be in a sealed, partial pressure environment. The easiest way to create a hermetic cavity is by bonding a rigid cap.  there are some MEMS process methods whereby you can create very shallow cavities, but these approaches do not work for motion sensors. So generally, you're stuck bonding on another piece of silicon or glass to seal in the motion sensor.

Oops... I'm late for the lecture today - looks like the audio portion is over...

Iron

Thank you Alissa and Alex

Iron

How are the parameters typically guaranteed? Full testing? Partial testing and process guarantees?

Iron

lowest power for accel ? gyro ?

Iron

Excellent presentation - THANKS!

same here... any recommandataion on books/reference??

Iron

Thank you Alissa and Alex for an interesting presentaion and a great way to spend my lunch time. See all tomorrow.

Iron

@Alissa - Will you be adressing microphone arrays tomorrow?

Iron

Thanks Alissa & Alex

Iron

Q-any electrostatic susceptibility, both internal and external to the etching?

Iron

The freescale sensor i just received does a lot of processing within the sensor package so that the device puts out usable values.  Is this true of most of the other brands as well?

Blogger

MEMS reference books: google authors Kovacs, Maluf, Madou

Thanks for the presentation.  Amazing how MEMS are used for toys these days

Iron

Thank you, very good presentation.

Iron

Another great presentation. Thanks.

Iron

Accel with a little math as good as gyro but slower ?

Iron

What kind of noise level do these accelerometers have?  (E.g. for a +/-2g accelerometer)

Iron

Thanks much Alissa and Alex. Very informative..

THanks DIGIkey and Design News.

Iron

Alissa, can you recommend some books/references in MEMS field?

How prone are accelerometers, gyros, and IMUs are to EM interference?

Iron

super presentation, thanks Alissa...thanks Alex

Iron

Very good presentation Alissa. Thank You

Iron

@garysxt - Yes, that is the limiting factor for a lot of inexpensive seismographs (e.g. hobby cost level)

Iron

Thanks Alissa -- great session today!

Iron

@Alissa - It sure would be nice to have a face to go with the voice.  We have only two sessions left this week.  Will you consider posting your photo for us?  Please?

Iron

Thank you Alissa, Excellent presentation

is there any good reference book which goes into the details of accelerometers and gyros?

Iron

are you going to talk about magnetometers?

Blogger

Thanls for another great lecture - Lots of interesting data

Iron

@jrjohns - thanks. Low frequency is very important there, correct?

Iron

For the majority of the MEMS devices shown in your presentation, is a Si 'cap' bonded to the peripheral face of the MEMS chip thereby creating the hermetic package which is subsequently wirebonded to a leadframe and over-molded - or is there another cheaper way to create the cavity in the molded package interior.

If not using a 'cap', is it really 'hermetic' and what might be the use environment limitations?

Iron

Alissa, it would be nice to have your picture on the faculty site.  You are the only one without a picture.  Excellent presentation, thanks.

Iron

Question:Will we see accel/gyro integrated in large ASICs anytime soon?

Iron

I worked with the ring laser gyros from Honeywell many years ago.

Blogger

Yep, a Google search shows ADI has the iMEMS trademark (integrated MEMS).

Iron

Is the gyros voltage output highly non-linear?

 

Iron

@garysxt - Sensitivity is one factor - frequency response is another concern for a MEMS for seismology

Iron

what range can the power consumption be?

Iron

ALISSA: Any one placing MEMS gyros mounted on bullets to better reasearch solid body dynamics?

Iron

Question: Do these devices come with wireless communication transmitters? I mean is it possible to use those in wireless remote sensing?

 

Are there any MEMS for directly measuring Torque?  Particularly between a motor and a shaft.

Iron

Question: Someone mentioned using MEMS for seismology applications. Do them make them that sensitive?

Iron

You mentioned MEMS gyro precision varies based on application. Can you give a quantified example?

Iron

What manufacturers have MEMS IMUs?

Iron

I remember working with a Litton INU, vibra gimbal gyros and a 16 bit mini computer packaged on about 6 miniature boards.

Iron

THEATER: Coreagraphers will use them for collecting body dynamics and be able to simulate systematic instruction to the individual actors.

Iron

PLEASE START SEEDING YOUR QUESTIONS FOR ALISSA, WHO WILL BE COMING ON THE CHAT CENTER HERE SOON...

Blogger

@Alex question: The most fascinating so far for me are the automotive performance computers.  Push the suction cups onto the windshield, enter the car's weight and go.  0-60 mph time, quarter mile time and much more...  Great!

Iron

how big is that 2-axis invensense gyro?

Iron

ORCHESTRA: I can see conductors in the future using wrist MEMS device to transmit their gestures to blind players.

Iron

Phones, pedometer, video game controller, helicopters, ereaders, tablets

Iron

Android, Toys, Gaming

Iron

Ipod, wii, ipad, smart phones.

Iron

Wii, iPod, iPhone,

interesting are Gyro and accelerometer.

iPod touch, wii controller.

Iron

my Toshiba tablet is full of MEMS devices. I've used most without really knowing it!

Iron

Consumers have no sense of sensors or what they are or whether or not they are in devices. My two cents. They just want to shift to landscape mode, for example, when they rotate their phone or tablets.

Iron

Games, camera stabilizer, tablet

Iron

@Alex: have used smart phones.

Iron

Wii controller, iPhone, iPad, 

Iron

video game controller, iPAD

Iron

TRANSCENDING AGE: We won't be able to distinguish who are cenile or not when they speak and gesture apparently to themselves. That might bring us close to the perfect world.

Iron

iPhone, iPad, Wimote.

Iron

video game controller

Iron

don't some cell phones rotate the screen

Is the vibration resistant camera lens has MEMS devices?

Consumer MEMS Exposed to - phone, Ipad, Wii

Iron

@davy.barker:  Imagine a box rotating about a vertical axis.  Accelerometer reads 0, gyro doesn't.

Iron

no matter what they LOOK crazy!

Blogger

as a consumer, I'm interested in position sensing with accelerometer and gyro, Inertial Navigation.

Iron

I would guess that gamma rays degrade the accompanying semiconductor electronics more than the micro-mechanics themselves.

Iron

ANSWER:  AS A CONSUMER, WHICH MEMS SENSOR-EQUIPPED DEVICES HAVE YOU USED and/or find interesting as an app example?

Alexander Wolfe

 

iPhone level

Iron

why can't accel put out gyro info with a little math ?

Iron

ALISSA: I don't see why a fly wheel can not be implemented in an active MEMS. Can yo elaborate?

Iron

ANSWER:  AS A CONSUMER, WHICH MEMS SENSOR-EQUIPPED DEVICES HAVE YOU USED and/or find interesting as an app example?

Blogger

well, as far as I know gamma rays degrade everything but cockroaches :)

Iron

@Alissa - Are any of the manufacturers offering MEMS as Rad-Hardened?

Iron

not yet, Plan to use in future

Iron

Is there a way/method to identify degraded/damaged MEMS device in the field?

No plans to implement MEMS in products.

Iron

No using currently. General info only.

Iron

Will be using MEMS in next year

Iron

actually, I'am used a IMU/GPS

of Xsens technologies, is a MTi-G device

How immune to radiation damage are MEMS devices?

as well as motion sensor.

Iron

Yes, in current new design

Iron

yes..pressure and flow sensing

 

Iron

Currently planning to test and ship.

Iron

planning to use MEMS pressure in next year

Iron

Currently tinkering with accelerometers and gyro's (etc.) and IMU's are on the horizon.

ANSWER: ARE YOU USING MEMS SENSORS IN A CURRENT PRODUCT AND/OR ARE YOU PLANNING TO USE MEMS SENSORS IN THE NEXT YEAR?

Alexander Wolfe

 

No current project, but will be looking for an opportunity to fit one into a design.

Iron

No current project. Maybe next  year.

Iron

@Alissa:  What is the noise floor of the accelerometers?

Iron

Not using in any current project, but possibly yes in the next year

 

Iron

Not currently; Possible future

Iron
Nothing planned in. Near future. Not sure about next year.
Iron

using accelerometer for attitude/level sensing

Iron

Not currently using MEMS, may use in the next year or so

Iron

Don't use today, but are looking into shock sensing and positional.

not yet,  but looking forward to applying it

Iron

We are using MEMS in both current and next gen products. High end accelerometers with 24bit output.

Iron

Not currently using MEMS sensors but interested in using the accelerometer.

Iron

not currently using MEMS and have no plans, except maybe as research in lab for evaluation and understanding

Iron

Yes, currently using them and planning to use more in the future.

Iron

not current but plan to use in the near future

Not currently using. We're just gatheing information at this point.

Iron

Yes -- pressure and temperature sensing in geophysical products

Iron

not in a current product and no plans to use one in the future, yet.

Iron

planning to use in a new project soon

Blogger

No use now and no plans for immediate future

Iron

accelerometer for vibration detection in heavy machinery

Iron

Currently not using Mems. Possible use within the next year

Iron

We use MEMS a bit now, and may use more in a year or so.

Iron

not in any projects at this time

Iron

planed to use, evaluating now

Iron

Not currently. We do plan to use XYZ accelerometer in the next year

Current project - Accel & Gyro

Iron

Will use one withont the next year

Planning to use in the next six months.

Iron

@ALEX-Telecommunication Systems Engineer, interested in Gyroscopes sensors

Iron

USE MEMS: may happend next year.

Iron

Using?  Absolutely!!

Iron
General interest 3d positioning.
Iron

piezo and microfluidic for inkjet

Iron

ANSWER: ARE YOU USING MEMS SENSORS IN A CURRENT PRODUCT AND/OR ARE YOU PLANNING TO USE MEMS SENSORS IN THE NEXT YEAR?

Blogger

Can I measure repeated shocks with a MEMS accelerometer without reducing its life? The shocks would be within the measurment range of the accelerometer.

Iron

POSITIN: I am interested in accurate real time position sensing. Don't know if I understood explanation.

Iron
Primarily software design
Iron

Interest in home enviroment control

Accelerometers, and general MEMS

Iron

SR DESIGNER; INTEREST IN IMPLEMENTING MEMS IN CURRENT PRODUCT LINE OF OXYGEN SYSTEMS EQUIPMENT

Iron

Electronic Design Engineer/MEMS for Military applications.

Platinum

Software Engineer, GNSS/INS products

Iron

Test Services; Accelerometers and Gyros primarily. A variety of sensors secondarily.

Iron

Software engineer, interested in MEMS in general

Iron

General interest in MEMS.

Digital sensors in Oil and Gas co using Accelerometers.

Interested in updates on consumer apps.

Iron

QUESTION: Is there any MEMS for measuring robotic arm position? Perhaps estimate is possible with accelerator.

Job Function: For the last 4.5 I've been teaching engineering disciplines in College/University.

Iron

Hardware Design Engineer (coordinator), mobile/smartphone handset industry.

Iron

software enginner/no specific interest, just interested in learning about MEMS

Iron

Computer Solutions Provider

ANSWER: WHAT CONSUMER MEMS SENSOR APPS ARE YOU INTERESTED IN?

Alexander Wolfe

 

Accelerometers, gyro and motion.  Is there one for a compass?

Iron

system engineer, planar light circuit

 

Iron

Mechanical Engineer; interested in pressure (touch) sensors, temperature sensors.

Iron

Hardware, Software - Pressure, Temp, Vibration

Iron

Not in consumer markets, work in military applications

Iron

job function is sustaining engineering for an instrumentation manufacturer.

Iron

i do everything, moisture and vibration

Iron

Just checking ut mems

Iron

video processing algorithm design engineer

 

Iron

Software. Only a general interest in consumer MEMS sensors.

Iron

Interested in MEMS for consumer electronics and machine control.

Iron

Pressure, temperature, noise meter, FFT, Proximities, oil level, accelerometer

Iron

I just got a kit from Freescale which combines an accelerometer and a magnetometor (sp?) to make a compass.  Applications will be more for new product development.

Blogger

myself:  HW/SW embedded engineer.  Market:  data logging, large motor and power.  Sensors:  piezo, temp, humidity, rogowski, capcitive, magnetic.

 

Iron

MEMS applicatin of interest: wide open at this point. Robotics for RTOS labs may define the type of sensors I will use in the future.

Iron

Not in consumer market, but technology can be used in others.

Iron

High resolution accelerometers for seismic survey.

Iron

job: trying to move into hw engineering

Iron

Medical [implantable and non-implantable], automotive, and consumer apps

Iron

sensors of all kind

Iron

I guess accelerometer is a good place to start.. later gyro must be a logical extention

Iron

motion and high-g measurement

imostly general interest and building knowledge for my problemsolving toolbox.

Iron

I'm interested in any of the consumer portable devices - phones, tablets, watches, etc. (don't work much in this area)

Iron

I'm interested mainly in high dynamic range low-noise motion sensors, especially accelerometers.

Iron

camera stability would be helpful

Iron

Interest in using MEMS for HID controllers

general application usage of MEMS technology

Iron

Vibration sensing in a small engine power generating system.

video stabilization

 

Iron

Automotive & infotainment

Iron

general consumer apps

Iron

Hi Alissa, Hi Alex, Hi everyone.

Iron

ANSWER: WHAT CONSUMER MEMS SENSOR APPS ARE YOU INTERESTED IN?

Blogger

gets cheaper? , yes, i believe so..

Iron

Will gyro's get as cheap as accellerometers ?

Iron

hardware  design,

Iron

Sales/Customer Technical Support -Inductive Technology

 

Electronics Engineering Manager - Automotive Systems/Modules

Iron

SW, HW, product development, system integration

Iron

Research and Development

Iron

My audio gone, Refresh [F5} does not work - help

communication and computer electronics, some firmware support.

Iron

MEMS manufacturing integration

Iron

hardware and firmware

Iron

I do it all at this time.  I am the sole developer for new specialized test equipment.

Iron

Process Development

Iron

calibration/engineering

Iron

SW background, currently HW and FW

Iron

ANSWER: WHAT's YOUR JOB FUNCTION?

Alexander Wolfe

 

HW/SW/FW

Iron

Developer hdw, firmware, software.

Iron

Owner/Founder of product development company.  Interested in incorporating new tech to solve problems.

Iron

Systems and mostly hardware.

Iron

@refraction, I haven't recieved any cards since registering and attending all sessions.

Iron

hardware... medical applications

Iron

Applications Developer, previously electric design engineer and project developement group leader

Hardware and Firmware design of Scientfic instruments and hybrid power systems.

 

Software, Hardware, Embedded Engineering

Iron

System Design, HDW and SW

Iron

R & D Engineer for work truck equipment

Iron

ME, sensor packaging design

Iron

Embedded systems, mostly firmware.

Iron

SW & HW..mostly HW..moving towards SW.

Iron

Software/Harward/Firmware

Iron

hardware design, system integration

Iron

Hardware & software/firmware, Alex

Iron

Materials & Process Development

Iron

software, firmware, system design

Blogger

Hey Alissa.  Welcome back again.

Iron

ANSWER: WHAT's YOUR JOB FUNCTION?

Blogger

I waswonderng how to get the gift card? Anyone got it already?

 

Iron

Accelerometer from which manufacturer is easy to use by circuit and by programming?

Iron

Hi Alissa -- looking forward to today's class!

Iron

Hello Alissa..looking forward to another great presentation.

Iron

G'day!  Audio is up!

Iron

I would like to receive my Pepsi card!!   :)

Good afternoon Alex.

Iron

it seems the starbucks card is only available when you first register on digi-key. not for each session.

Iron

hello MEMs  (I mean MEMS ... !!)

 

Iron

Hello - still no answers to my questions ;-(

Iron

Nope.  Still haven't even from the April classes.

Iron

Nothing here either.

Iron

HI all. It has been over 5 years since I last did a project with a MEMS acceleromter. I will be good to catch up on the technology today.

Iron

I think we need to finish the whole seminar

Nothing here either...

Iron

I figured it was because I moved.  I guess that's not the case.

Iron

No Starbuck cards yet here.

Iron

Good afternoon folks.

Iron

Anybody received their Starbuck cards yet?

Iron

hello out there to all...

Iron

Good morning all from foggy and cool Edmonton.

Iron

Heat is comming to East Coast

Good morning to the left coast people.

Iron

good afternoon, everyone

Iron

@Alex  Thanks for the heads up on the LinkIn connection.

Iron

Hello all one of you.

Iron

Be sure to click 'Today's Slide Deck' under Special Educational Materials above right to download the PowerPoint for today's session.

Blogger


Please join our Digi-Key Continuing Education Center LinkedIn Group at http://linkd.in/yoNGeY

Blogger

The streaming audio player will appear on this web page when the show starts at 2pm eastern today. Note however that some companies block live audio streams. If when the show starts you don't hear any audio, try refreshing your browser.

Blogger


Partner Zone
Latest Analysis
These are the toys that inspired budding engineers to try out sublime designs, create miniature structures, and experiment with bizarre contraptions using sets that could be torn down and reconstructed over and over.
Connected sensor-enabled applications will improve the consumer experience -- and generate new revenue streams.
PowerStream is deploying the microgrid at its headquarters to demonstrate how people can generate and distribute their own energy and make their homes and businesses more sustainable through renewables.
Printrbot unveils its all-metal Printrbot Simple, bringing durability to low-cost 3D printers.
Today's robots should be respected, and humans should be wary of their growing skills and sophistication. Quite simply, robots are better than us in a lot of ways. Here are 10 of them.
More:Blogs|News
Design News Webinar Series
3/27/2014 11:00 a.m. California / 2:00 p.m. New York / 7:00 p.m. London
2/27/2014 11:00 a.m. California / 2:00 p.m. New York / 7:00 p.m. London
12/18/2013 Available On Demand
11/20/2013 Available On Demand
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Apr 21 - 25, Creating & Testing Your First RTOS Application Using MQX
SEMESTERS: 1  |  2  |  3  |  4  |  5


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.
Next Class: April 29 - Day 1
Sponsored by maxon precision motors
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service