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hello all from Edmonton, Alberta

Iron

no power design, development

1.1v, 1.2v, 1.8v, 3v, 3.3v 5v, 12v, 24v, 48v

Thanks, good session

Iron

I opened the PPT files with open office and made a PDF output, and the URL HTTP links on the next to last slide worked fine. So the playback viewer applications might be to blame.

Thanks Warren for a great program. Thanks everyone for attending. See you again tomorrow.

Blogger

Thanx everyone for attending! CU tomorrow...

Here are the links to the reference material at the end of the PPT. Sorry links didn't come thru on the slides.

Exar PowerXR web page- here

Cypress Programmable Clocks web page- here

Lattice ispClock web page- here

Iron

Alaskaman66- The software that these devices use do much of the calculation for you which is a big help. I think the different settings for PLLs is just a source of possible error if not done via a computer...

Iron

Thanks Warren, Rob, & DigiKey, 'till tomorrow

Iron

Any questions I didn't answer? Any new ones?

Iron

From my experience with Motorola radios, I remember they used a single oscillator source for the basic FCC frequency stability requirements, then generated any required frequency (Xmt, Local Osc) for each channel by using aPLL and a mathematical division algorithm. It was rather complicated, and I never really understood how the individual frequency sets were derived. The Lattice products look simpler.

Thanks, Iwas realizing that i could just reprogramm an output to a slightly different freq and see if my spur moves.

"See you" tomorrow.

Cheers,

npitech

Iron

RMenon- CY23S09 is a Zero Delay buffer that can be used to create mutiple clock outputs from a single input- useful in chassis based designs where you want an individual clock at each slot...

Iron

Alaskaman66- Frequencies are related in that that use the same Osc frequency as a starting point...

Iron

npitech- You can adjust the pahse and time delay but I'm not sure if the spread spectrum settings are easily dithered. My guess would be that you can'd do it on an output by output basis, but should check the data sheet to be sure..

Iron

Alaskaman66- Frequency hoping radio- I'm not sure of the frequency requirements or the 'hops' involved but if they are within the 50MHz to 400MHz range I think there is a good chance it would work. How fast hops need to take place would be important too...

Iron

Warren, these products open up a whole new arena for design. This course is very useful. There's always more than one way to skin a cat, and now it's quicker and simpler.

MazianLab- Clock outputs are very closely matched on the Cypress and Lattice devices. You need to check the data sheets for the precise #s.

Iron

Are the clock frequencies truly independent, or are they mathematically linked?

 

 

Blogger

Can you dither individual clocks? (for spur hunting, emc troubleshooting)

Iron

jack212- Voltage ramps with 1 volt apart... I believe the Lattice parts can do this via comparitor settings and some FPGA logic to control the ramp up/down. Check out the Power 2You book and see if there is an example like that. Can remember it off the top of my head..

Iron

Would this be applicable to a frequency hopping radio?

 

 

Blogger

How well are CLKA, B, C, D, E are synced? Any possible mismatches?

Blogger

Thanks. I'll check it out. Probably know most of them, just don't recognize the abbreviations.

RMenon-

isp5400 could be useful in energy management, in particular if you need to vary the frequency based on power available...

Iron

CY23S09 good for multi-bus data communication?

 
 
Blogger

Can various voltages (1.8, 3.3, 5.0V) be ramped up under the requirement of not being more than 1 volt apart during ramp up?

Iron

drw36- View in presentation mode- Good to know! Thanx.

Iron

Alaskaman66- You can the interface standards explained on the Lattice web site when they describe their FPFA IO capabilities. The data sheets will help too.

Iron

The links worked fine for me when in Reading View mode in PowerPoint. In Normal View mode they are inactive.

Iron

Looks like isp5400 could possibly be used for ramping up/down power output to renewable energy interconnect.

 
 
Blogger

Alaskaman66- Some of these timing issues did end up being 'debugging' issues in the past. My first designs all seemed to go thru a phase like that...

Iron

What do the acronyms for enable control and diffeRential output standards stand for? Thanks

 
 
Blogger

what has been your most challenging design to date?

Iron

The links on 21 are still just blue words with underlines and not HTML links.

Iron

Warren I wanted to know more about Exar Power Manager devices.  We have used PSoC devices as power manager in the past

Iron

I missed it? Blasted. Back to the archive for me.

Blogger

Warren, before these clocking products were available, am I correct in remembering that clocking problems were something that usually showed up after the circuit was designed, and then handled from a troubleshooting point of view?

 

 

Blogger

Can't wait till tomorrow

Iron

looks like you just need to open the hyperlink to go to it- not just a click (at least on my Mac thats what I ned to do!)

Iron

Thanks Warren.  Interesting presentation.  Now I can start throwing some acronyms around :-)

Iron

Thanks Warren. great presentation.

Iron

Thank you Sirs for the presentation

Iron

Warren, thank you for today's presentation

Iron

Very informative lecture

Iron

Thanks your presentation.

Iron

if the links work thats great!

Iron

Great presentation, Thanks much

Iron

The links on slide 21 appear to actually work.

Iron

Warren, before these clocking products were available, am I correct in remembering that clocking problems were something that usually showed up after the circuit was designed, and then handled from a troubleshooting point of view?

We're now on slide 21

Blogger

Typically inside the device. not very complex issues.

Iron

We're now on slide 20

Blogger

Haven't had any timing promblems yet or the need for 0 delay buffers.

Iron

ZDBs would be handy in providing real-time monitoring of energy output tied to Time-of-Day incentives in solar PV.

Iron

Most of the timing is done through internal PLL in my application.

Iron

Warren's question:

Do you uses zero delay buffers or retiming on your boards? What is your most complex timing problem?

Blogger

We're now on slide 19

Blogger

What do the acronyms for enable control and diffeRential output standards stand for? Thanks

We're now on slide 17

Blogger

Looks like isp5400 could possibly be used for ramping up/down power output to renewable energy interconnect.

Iron

We're now on slide 16

Blogger

xtals and oscillators

Iron

We're now on slide 15

Blogger

CY23S09 good for multi-bus data communication?

Iron

test equipment typical needs:

22-32v for pll

+-9-15V for opamps, muxes, Vref, and >80 dbc on/off ratio

-5 for opamps, last generation chips

3.3V and below for digital

These controllers all look great but don't have enough Vouts for system

 

Iron

We're now on slide 14

Blogger

Oscillators; 80MHz

Iron

simple crystal closks or oscillators. Highest ~500MHz

Iron

We're now on slide 13

Blogger

Ocs with PLL, 40 MHz

Iron

I've used oscillators before in the low Mhz range

Iron

No clock generation to distribute. Generated in the micro for its own use.

Iron

Oscillators; 500 MHz

Iron

Usually use FPGA PLL directly and programable OSC.

Iron

We're now on slide 12

Blogger

How well are CLKA, B, C, D, E are synced? Any possible mismatches?

Iron

Would this be applicable to a frequency hopping radio?

Typically Osc for microcontrollers. Highest frequency of 10MHz. 

Iron

simple xtal - logic clocks ~ 80 mhz

Iron

just an oscillator - nothing fancy like this...

Iron

Warren's question:

What approach do you use for timing generation in your design? Oscillators? PLLs? What is your highest frequency?

Blogger

System is simple enough, just use a crystal

Iron

We're now on slide11

Blogger

We're now on slide 10

Blogger

Are the clock frequencies truly independent, or are they mathematically linked?

Onboard dc and board level power system be used depend up situation.

Iron

3rd party power sources

Iron

yes, using LDOs/buck/boost/etc...

Iron

We're now on slide nine

Blogger

We're now on slide eight

Blogger

Zener diodes for sub 3 volt and really low current requirements.

Iron

We're now on slide seven

Blogger

Yes, using descrete voltage references and regulators.

 

Iron

Yes, using the LM3905/03... series as the voltage regulator.

Iron

linear tech switching power supply

I have designed power sub-systems

Iron

Use power from 3rd parties.

Iron

No, have not designed power

Platinum

No board level power design.

Iron

yes, I've designed board level sub systems.  Primarily using microcontrollers.

Iron

Separate power design group.

Iron

Warren's question:

Have you designed board level power subsystems? Which devices did you use?

Blogger

1.0v, 1.2V, 1.8V, 2.5V, 3.3V. input 9 to 36V

Iron

We're now on slide six

Blogger

+5 volts and down

 

Iron

12V and down (+-5, -3.3, -1.8, etc)

Iron

Hello from Chihuas Mex.

Iron

3.3, +-5,10, -15, 32 from ps, everything else created locally

Iron

We're now on slide five

Blogger

Greetings from Wheaton IL

We're now on slide four

Blogger

Voltages used: 3.3, 5, 12 and 24VDC.

Iron

Since we are industrial environment, we prefer 5V, but often have to settle for 3.3V. Isolated I/O to the world is 24Vdc.

Iron

+5 _12- highest 50VDC

Iron

Highest voltage 130VDC in solar PV.

Iron

Used 5V max and some 3.3 V

Platinum

3.3, 5, 12, and 24.

Iron

Warren's question:

- Several questions on high voltage last class. What voltages are common in your systems? What is the highest voltage?

Blogger

We're now on slide three

Blogger

Audio is loud and clear here; after few refreshes though ;)

Iron

Good evening from Gr

Iron

Hi Warren, your little bio is missing from the page today

Iron

Goood afternoon everyone from sunny and warm Toronto

Iron

We're now on slide 2

Blogger

hi from Sacramento

Iron

Audio is loud and clear

Iron

Hello from Greensboro NC

Iron

Hi all - Audio is live!

72 degrees in Wine Country

Iron

Greetings from eastern Mass. Partly sunny and very windy 70F.

Iron
@jarabian@gmail.com: The audio will begin at 11:00 AM Pacific/2:00 Eastern on the dot. One more minute.

Hello Fellow Programmers!!

Iron

Where's the audio? Don't see it yet.

 

Hello again from Michigan

Iron

Helloooo World! Wake up... 4 more min to go.

Iron

hello from Mishawaka

Iron

Hello from Montana

Platinum

Sorry can't make the live feed. I'll catch it later.

Hello from Albuquerque.

 

Iron

Good Afternoon from the BOSTON BRUINS Hometown!

Iron

Hello from sunny (maybe rainy later) Atlanta

Iron

Here are the links to the reference material at the end of the PPT. Sorry links didn't come thru on the slides.

Exar PowerXR web page- here

Cypress Programmable Clocks web page- here

Lattice ispClock web page- here

Iron

Hello from sunny Binghamton, NY.

Iron

Good morning everyone.

Iron

Another fine morning in Valdez

Hello from sunny SE Lake Simcoe Ontario Canada.

Iron

Good morning from rainy Edmonton, AB

Iron

Greetings from Vermont

Iron

Good morning everyone

Iron

Unpresent but still here.

Iron

Hello from the Home of the Chicago Black Hawks

Iron

Hi from hot Panama City FL

Iron

-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

MayanBlood, in both of our cases, these are reasonable temps for the season. 

Blogger

lucky you! we are expected to hit 108 today

Iron

Good morning from Scottsdale, AZ

Iron

Good morning!  I hope to catch this lecture when it happens.

Iron

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

Blogger

Good morning from Albuquerque, New Mexico. We're expecting to hit 99 today.

Blogger

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

Blogger

Good morning from sunny Buenos Aires

Iron

Good morning from Mobile, AL

Morning from Portland Oregon

Iron

-Be sure to follow @designnews and @DigiKeyCEC on Twitter for the latest class information. We encourage you to tweet about today's class using the hashtag #CEC.

Blogger

download slide first.

Iron

Good to keep learning!

Iron

Good concept, software analog.

Good slides, see you all soon...

Iron


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