For this application, ARM? PIC? FPGA? DSP?

Discussion in 'General Electronics Chat' started by richiechen, May 20, 2013.

  1. richiechen

    Thread Starter Member

    Jan 1, 2012
    Dear ALL

    For my current project, I am using PIC. It is too expensive, however. Therefore I am thinking to change it into other chips.

    BTW, I dont understand why PIC(dsPIC33) is this expensive, since ARM has higher speed and similar peripherals!

    Here is the description of the project:
    Read DATA from 18 bit ADC via SPI around 100ksps.
    Do control algorithm, basically division, multiplication (PID).
    Output DATA with 18 bit DAC via SPI, around 32ksps.

    Could I have any suggestion on what kind of processor to use?
    On aspect of cost, easy to make PCB.

    Thank you very much.

    Best regards
    Richie CHEN
  2. nigelwright7557

    Senior Member

    May 10, 2008
    dspic is dirt cheap at RS Components.
    What are you paying for them ?
  3. richiechen

    Thread Starter Member

    Jan 1, 2012
    Around 20USD for each.

    Do you have any suggestion on different chips?