• TI Thinks Resolved

programable transmitter for 18 bit digital signal

Intellectual 430 points

Replies: 14

Views: 211

Hello, i want to convert my analog signal from sensor with 18 bit ADC shown bellow.

but then i need to modulate is (18 levels) and trasnmit using filter mixers etc..

Is there some programable device with (I2C SPI ect.) which could take my digital signal and broadcast it?

I could no find in texas intruments such a device although they have a very good.

I'll be galad if you could recommend such device.

Thanks.

[URL unfurl="true"]www.microchip.com/.../URL]

  • Hi Yefj,

    If you have a specific question about a connectivity part, just let us know and I'd be glad to help. I'm going to close this thread for now, but feel free to repost for a specific device so we can get it routed to the appropriate expert.

    Best,

    Nate

    Nathan Block

    2.4 GHz Hardware Applications Team

  • In reply to Nathan Block:

    You did not answer my question :-)

    basicly i am looking for you equivalent of ESP8266,simple  wifi module i can control the broadcast with.(not super fancy)

    i already have EFR32 BOard for that.

    You are a good company i would appriciate if you recommend me such VERY simple and SMALL wifi module device.(like ESP8266)

  • In reply to yefj smith:

    Hi Yefj,

    You may find this tool helpful. If you give it a non-TI part, it will give you comparable TI parts. So, you could enter ESP8266, and it will give you TI parts that do very similar things.

    https://bomcross.ti.com/en/

    Best,

    Nate

    Nathan Block

    2.4 GHz Hardware Applications Team

  • In reply to Nathan Block:

    Hello the CC3130 sound great, two questions:

    1.From the photos shown bellow do i need to connect an external antenna to it?

    2.It doesnt seem to have legs, how do i connect it on a my breadboard..

    Thanks.

    https://www.ti.com/lit/ds/symlink/cc3120mod.pdf?ts=1605516429272&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FCC3120MOD%253FHQS%253DTI-null-null-octopart-df-pf-xrefTI-wwe

  • In reply to yefj smith:

    What kind of socket i need to buy for this  device in the link bellow,so i could put it on a breadboard.

    www.ti.com/.../CC3130

  • In reply to yefj smith:

    Hi Yefj,

    What you're describing sounds more like a launchpad/evaluation board. Perhaps this will be a good match. It has pins already built in to connect to a breadboard and a chip antenna built into the board.

    https://www.ti.com/tool/BOOSTXL-CC3135

    Nathan Block

    2.4 GHz Hardware Applications Team

  • In reply to Nathan Block:

    Why i cant use the device i mentioned before and by socket for it?

    Thanks.

  • In reply to yefj smith:

    Hi yefj,

    The CC3130 IC will not work properly by simply mounting it on a socket board and sticking it into a breadboard.

    See the CC3120 Layout Guidelines Appnote. Although this appnote was written for a different variant device, the layout guidelines are still the same. By reading through the appnote, you'll note that:

    1. The IC must be mounted on a board with a specific stackup (pg. 3). This is because the recommended RF trace is a coplanar waveguide.    
    2. The device requires several external components in it's engine area that must also be placed close to the component to ensure optimal performance (pg 5). The guidelines for the DC/DC components must be strictly followed. See here for the HDW checklist.
    3. Three traces must be routed on the 2nd GND layer of the PCB from input decoupling caps as return current paths. This grounding avoids the common impedance coupling between the DC-DC and RF sections (pg. 7). 
    4. GND vias must be placed on the device's GND pad to ensure optimal thermal dissipation as shown in Figure 14 (pg. 19).

    Our customers mostly use the BOOSTXL-CC3120 (2.4GHz only) or BOOSTXL-CC3135 (Dual Band) for development before designing and building their own custom board.

    Also note that the CC31xx device families require a host MCU. Initially you inquired a Wi-Fi module with MCU capabilities. If this is still what you are looking for, I recommend you check out the CC3220MODSF or CC3235MODSF. 

    Let me know if you have any further questions. 

    Thanks,

    Seong

  • In reply to Seong Kim:

    Ok Seong,you convinced me to purchase BOOSTXL-CC3120.

    this is my first time working with TI MCU for BOOSTXL-CC3120.

    Could you please reccomend me some starting material? Video manuals will be even greater.

    Thanks.

  • In reply to yefj smith:

    Yefj,

    Again, please note that the CC31xx devices require a host MCU so you'll need to purchase an MCU board such as the MSP-EXP432P401R as well.

    Perhaps it would be best if you describe what your goal is and I can help recommend what you need. 

    BR,

    Seong