UmTRXv2 final project

Jean-Samuel Najnudel - BJT PARTNERS SARL jsn at bjtpartners.com
Wed Jul 4 10:37:07 UTC 2012


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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