Asynchronous I2S FIFO project, an ultimate weapon to fight the jitter - Page 163

qusp · 5th December 2012, 02:21 AM

oh sure, probably better than a soundcard would be to buy the es9102 ADC dev board and build an OTT analogue front end for it, which is the hard bit. then you need to somehow fully characterize that and plug that performance into your software....

TheShaman · 12:23 PM

qusp, get that AP already!

Ian, qusp, did you guys have any progress regarding the compact regulators you were thinking of designing? How about the advanced management board?
Texas Instruments do offer some feature-rich evaluation boards for the latter at a - relatively - reasonable price, but they're not what you'd call compact PCBs exactly..

Awywany, I think both of the above would be welcome additions to this (and other) projects.
Sticking with the compact theme, matching boards for (or integrated) PCB mount transformers for the PSUs would also be welcome; though I still have a stock of R-Core transformers I'm trying to utilize somehow..

Just throwing around ideas/reminders.

qusp · 5th December 2012, 12:25 PM

yeah i'm at the point of getting some prototype PCBs in the coming weeks, but want to get a couple other designs on the same panel so working on some unrelated stuff first. no intention to integrate transformers, strictly DC input

TheShaman · 5th December 2012, 02:30 PM

Quote:

Originally Posted by qusp

yeah i'm at the point of getting some prototype PCBs in the coming weeks, but want to get a couple other designs on the same panel so working on some unrelated stuff first. no intention to integrate transformers, strictly DC input

Great news! Please keep us posted!

Regarding "smart charging" of LiFePo4 batteries, this bq25070 evaluation board is interesting and reasonably priced (@ $49). Single cell battery, so I'm thinking a clock or something. Also has an LDO 4.9V output as well which I'm sure will come in handy as well..

For multiple cell batteries, TI offers other devices like the BQ24630 (samples @ $99 though).
As with LDO samples, PCBs are not exactly compact, which is of course understandable since they're not sold as end products.

iancanada · 6th December 2012, 03:24 AM

Quote:

Originally Posted by TheShaman

qusp, get that AP already!

Ian, qusp, did you guys have any progress regarding the compact regulators you were thinking of designing? How about the advanced management board?
Texas Instruments do offer some feature-rich evaluation boards for the latter at a - relatively - reasonable price, but they're not what you'd call compact PCBs exactly..

Awywany, I think both of the above would be welcome additions to this (and other) projects.
Sticking with the compact theme, matching boards for (or integrated) PCB mount transformers for the PSUs would also be welcome; though I still have a stock of R-Core transformers I'm trying to utilize somehow..

Just throwing around ideas/reminders.

Thank TheShaman for you reminding. TPS7A4700 reg confirmed very good. Beat all LDOs I tested previously

. I have quite a few of PCB may try to supply some to those who need them.

Since people expressed they want to do something rather than just receiving free samples, so I need figure out how.

Regards

Ian

iancanada · 04:01 AM

TPS7A4700 reg was confirmed good in the past a couple of weeks. I ordered 50 PCB samples J. Somebody may need them for their project.

I understand you more will to support my R&D rather than just receiving free evaluation samples. So, in this case, I’ll supply this PCB with opening for donations.

If you want the PCB, you can make some donation to my Paypal account: iancanada.mail@gmail.com. You can ask for more than one piece with putting note on Paypal payment form. But to leave more chance for others, it would be better no more than three pieces if you don’t really need that many. TPS7A4700 PCB will be shipped to your Paypal address in a letter. Or, you may include your GBIII order number if you have to ship them together. But please do not mix up with GBIII payment, I may easy to get confusion. I thank you for your donation no matter how much it is J.

Slodering the QFN may need some skills, This youtube video may help:
http://www.youtube.com/watch?v=c_Qt5CtUlqY

Datasheet: http://www.ti.com/lit/ds/symlink/tps7a4700.pdf

Schematics attached below

I prefer receiving CAD$ as currency if it is possible

Regards from Canada

Ian

hochopeper · 6th December 2012, 03:51 AM

Excellent initiative Ian!

It may be worthwhile you nominating which currency you would like to receive donations in. To save in exchange rate dramas and hassles for you.

Cheers,
Chris

iancanada · 6th December 2012, 04:01 AM

Quote:

Originally Posted by hochopeper

Excellent initiative Ian!

It may be worthwhile you nominating which currency you would like to receive donations in. To save in exchange rate dramas and hassles for you.

Cheers,
Chris

Thanks Chris,

CAD $ of course

Ian

qusp · 6th December 2012, 05:29 AM

Hey Ian, i'll grab a couple please. just 2, I dont need 3. i'll send you an email yes?

regal · 6th December 2012, 12:13 PM

Quote:

Originally Posted by tubo

45. TUBO

46 Regal

5th December 2012, 12:20 PM	#1622
TheShaman diyAudio Member Join Date: Jan 2007 Location: Crete	qusp, get that AP already! Ian, qusp, did you guys have any progress regarding the compact regulators you were thinking of designing? How about the advanced management board? Texas Instruments do offer some feature-rich evaluation boards for the latter at a - relatively - reasonable price, but they're not what you'd call compact PCBs exactly.. Awywany, I think both of the above would be welcome additions to this (and other) projects. Sticking with the compact theme, matching boards for (or integrated) PCB mount transformers for the PSUs would also be welcome; though I still have a stock of R-Core transformers I'm trying to utilize somehow.. Just throwing around ideas/reminders. __________________ "You have a hierarchy: a mathematician, a physicist (which is a failed mathematician), and an engineer (which is a failed physicist)." - Andrew Jones Last edited by TheShaman; 5th December 2012 at 12:23 PM.

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5th December 2012, 02:21 AM	#1621
qusp is choosing a less facetious title... diyAudio Member Join Date: Oct 2009 Location: Brisbane, Australia	oh sure, probably better than a soundcard would be to buy the es9102 ADC dev board and build an OTT analogue front end for it, which is the hard bit. then you need to somehow fully characterize that and plug that performance into your software....

5th December 2012, 12:25 PM	#1623
qusp is choosing a less facetious title... diyAudio Member Join Date: Oct 2009 Location: Brisbane, Australia	yeah i'm at the point of getting some prototype PCBs in the coming weeks, but want to get a couple other designs on the same panel so working on some unrelated stuff first. no intention to integrate transformers, strictly DC input

6th December 2012, 03:51 AM	#1627
hochopeper diyAudio Member Join Date: Feb 2009 Location: Brisbane, Australia	Excellent initiative Ian! It may be worthwhile you nominating which currency you would like to receive donations in. To save in exchange rate dramas and hassles for you. Cheers, Chris

6th December 2012, 05:29 AM	#1629
qusp is choosing a less facetious title... diyAudio Member Join Date: Oct 2009 Location: Brisbane, Australia	Hey Ian, i'll grab a couple please. just 2, I dont need 3. i'll send you an email yes?