UmTRXv2 final project

Andrey Sviyazov andreysviyaz at gmail.com
Wed Jul 4 12:23:06 UTC 2012


Hi Jean-Samuel.

About SRAM which I've found from ISSI I'm sure that it full compatible and
of cause we are discussed with Andrew Karpenkov and Alexander Chemeris that
18Mbit size should be enough.
And also I think you should order exactly this 0603 and 0805 chip beads
instead of TI160808U601 and TI201209U121 as I mentioned and do not spend
time for search.

Best regards,
Andrey Sviyazov.



2012/7/4 Jean-Samuel Najnudel - BJT PARTNERS SARL <jsn at bjtpartners.com>

> Hi Andrey,
>
> Thank you very much for your reply.
>
> I try to find where to buy the TI160808U601 and TI201209-121 chokes. I do
> not know where I should find these. Would you know where I should order
> these components ?
>
> By the way, do you confirm the ISSI SRAM is pin compatible with the
> Cypress chip ?
>
> http://www.digikey.com/product-detail/en/IS61NLP51236-200TQLI/706-1103-ND/1557418
>
> Is this ISSI chip fine for our application ? Is 18 MBit enough ?
> Do you confirm this ISSI chip is the best value for what we need ? Are you
> sure we cannot find a lower cost chip with similar performances and/or a
> better performances chip with similar cost ?
> Are you sure we will not need to reroute the PCB ?
>
> We really need to be sure before starting the PCB production. If both you
> and Alexander confirm everything is fine, I will ask the fab to start the
> PCB.
>
> Please let me know.
>
> Again, thanks a lot for your help.
>
> Best regards.
>
> Jean-Samuel.
> :-)
>
>
>
> On Tue, Jul 3, 2012 at 11:40 PM, Andrey Sviyazov <andreysviyaz at gmail.com>wrote:
>
>> Jean-Samuel.
>>
>> Please inform me what actually rf chockes partnumbers are problem to
>> order.
>> Unfortunately MuRata produce few billion pcs and then stopped for a few
>> years.
>> So, possible we have to find some Chinese fab partnumbers to order.
>>
>> Best regards,
>> Andrey Sviyazov.
>> (Sent from my mobile client)
>> 04.07.2012 1:22 пользователь "Andrey Sviyazov" <andreysviyaz at gmail.com>
>> написал:
>>
>>  Hi Jean-Samuel.
>>> Unfortunately I have no internet connection now.
>>> Tomorrow I'll check flash and others.
>>>
>>> Best regards,
>>> Andrey Sviyazov.
>>> (Sent from my mobile client)
>>>
>>> 04.07.2012 1:10 пользователь "Alexander Chemeris" <
>>> alexander.chemeris at gmail.com> написал:
>>> >
>>> > On Mon, Jul 2, 2012 at 10:16 PM, Jean-Samuel Najnudel - BJT PARTNERS
>>> > SARL <jsn at bjtpartners.com> wrote:
>>> > > 1/ Would you know a distributor for the Murata chokes ? The fab them
>>> to have
>>> > > some issue to source these.
>>> >
>>> > Andrey is looking into this.
>>> >
>>> > > 2/ Would you suggest a distributor for the GPS chip ?
>>> >
>>> > Try contacting manufacturer directly:
>>> > http://www.transystem.com.tw/product.php?b=g&m=pe&cid=4&sid=&id=66
>>> >
>>> > They have a distributor in UK, but I think it might be easier to buy
>>> > from the manufacturer directly:
>>> > http://www.castlemicrowave.com/castle-contact.asp
>>> >
>>> > This chip is popular in Russia, so it is easy to source them here,
>>> > shipping them to EU might be a pain in big batches, but I think we
>>> > could send few chips for this prototyping batch if manufacturer's lead
>>> > time is too long. Here it costs $14.50/chip for more then 16 chips:
>>> > http://www.compel.ru/infosheet/TSI/EB-570/
>>> >
>>> > --
>>> > Regards,
>>> > Alexander Chemeris.
>>> > CEO, Fairwaves LLC / ООО УмРадио
>>> > http://fairwaves.ru
>>>
>>
>
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