UmTRXv2 final project

Jean-Samuel Najnudel - BJT PARTNERS SARL jsn at bjtpartners.com
Wed Jul 4 12:25:10 UTC 2012


Hi Andrey,

Thank you very much for your reply.

Could you please confirm the components bellow are fine ?
http://fr.farnell.com/murata/blm18tg601tn1d/ferrite-600ohm/dp/1115050RL
http://fr.farnell.com/tdk/mmz2012121b/perle-de-ferrite-0805-120-ohm/dp/1669728RL

Please let me know if this is fine.
If not, which would you suggest ?
http://ru.farnell.com/ferrite-beads

Thanks a lot for your help.

Best regards.

Jean-Samuel.
:-)


On Wed, Jul 4, 2012 at 2:02 PM, Andrey Sviyazov <andreysviyaz at gmail.com>wrote:

> Hi Jean-Samuel.
>
> For the TI160808U601 and TI201209U121 you can use any high current ferrite
> chip bead with 600 Ohm and 120 Ohm impedance respectively.
> For example you could order similar partnumbers from the ELFA<https://www.elfa.se/elfa3%7Eeu_en/elfa/init.do?init=1&shop=ELFA_EU-EN>catalogue in the
> 0603<https://www.elfa.se/elfa3%7Eeu_en/elfa/init.do?item=65-500-37&toc=20387>and
> 0805 <https://www.elfa.se/elfa3%7Eeu_en/elfa/init.do?item=65-500-43&toc=0> SMD
> cases respectively, datasheet here pdf<https://www1.elfa.se/data1/wwwroot/assets/datasheets/jqMLB-HighCurrent_e.pdf>
> .
>
> 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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