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fatemehjml started a topic metal shield over the PCB

in Altium Designer

01-25-2017, 11:57 PM
metal shield over the PCB

Dear Robert

I have seen many boards which was shielded by a metal over the whole PCB or over a especial place of the board. How we can implement...

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fatemehjml replied to grounding the PCB4

in Your Projects, Technical Discussion

01-23-2017, 09:33 PM
Thanks Robert.

I will try it....

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fatemehjml started a topic grounding the PCB4

in Your Projects, Technical Discussion

01-21-2017, 11:55 PM
grounding the PCB4

Dear Robert

I finished design of my PCB and I have connected all the nets. My 6 layer PCB consist of NXP LPC4357, GSM, LCD, NFC and GPS modules....

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fatemehjml replied to Layout considration for SDRAM which speed is 100MHz

in Schematic Design & PCB Layout

01-05-2017, 04:05 AM
I mean how we can know, the tefrence length to match all of them based on it? Which singnals, data, address, clocks.. have to be in the same length?

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fatemehjml started a topic Layout considration for SDRAM which speed is 100MHz

in Schematic Design & PCB Layout

01-04-2017, 10:42 PM
Layout considration for SDRAM which speed is 100MHz

Dear Robert

I have a LPC4357 with IS42S32800 in my PCB. The Maximum speed is 100MHz. I want to match the length of addresses and data buses....

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fatemehjml started a topic plane ordering in stackup

in Schematic Design & PCB Layout

01-04-2017, 01:56 AM
plane ordering in stackup

Dear Robert

Does it have any benefits to put The GND and VCC in which internal plane? I have a 6 layers PCB and I'm not sure to choose internal...

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fatemehjml replied to Via selection for Layout.

in Schematic Design & PCB Layout

01-04-2017, 01:51 AM
Dear Meet

Please check this post:
http://www.fedevel.com/designhelp/fo...ow-to-use-uvia

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fatemehjml replied to complete fix constant voltage for the GSM module

in Your Projects, Technical Discussion

01-03-2017, 11:19 PM
Finally I changed my design and use a 5V switching regulator, and then two separate 4V LDO and 3.3V LDO for GSM module and processor!...

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fatemehjml started a topic complete fix constant voltage for the GSM module

in Your Projects, Technical Discussion

11-25-2016, 11:33 PM
complete fix constant voltage for the GSM module

I have one GSM module Quectel M95 in my design. I power it up with one 4V switching regulator. The voltage range can be 3.7-4.2V. When I check my designs...

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fatemehjml replied to micro usb footprint design help

in Schematic Design & PCB Layout

01-20-2016, 12:20 AM
Dear Robert

Thanks for your answer.

Unfortunately I can't change my design at this moment and I bought all my parts, But I didn't...

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fatemehjml started a topic micro usb footprint design help

in Schematic Design & PCB Layout

01-19-2016, 11:35 PM
micro usb footprint design help

Hello,

Good day,

I'm designing PCB footprint for 0475900001 molex micro usb connector. As you see in design guide, the PCB edge...

http://s000.tinyupload.com

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fatemehjml replied to Programming header selection

in Your Projects, Technical Discussion

12-19-2015, 09:25 PM
Dear mairomaster

Thank you very much.
I visited the website. The prices is so high but that's what I'm searching for!
...

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fatemehjml started a topic adding new column to the BOM file

in Altium Designer

12-14-2015, 09:18 PM
adding new column to the BOM file

Hi,

I want to send my project for the assembly house. The manufacturer has a default format which we should use. There are two columns which...

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fatemehjml started a topic Bus and Ports using in schematic design

in Schematic Design & PCB Layout

11-24-2015, 02:26 AM
Bus and Ports using in schematic design

Hi Robert

I was wondering if you can tell me when it is necessary to use bus and ports in our schematic designs? As I checked when we have...

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fatemehjml replied to STm32F407 boot pins implementation

in Other

11-22-2015, 11:42 PM
Thank you very much dear,

According to attached image, I will connect Boot0 to the ground by 10k resistor, and leave Boot1 unconnected. As...

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