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Who can consult me?

Ilarion Wus
Prodigy 20 points

Hi !

I need help for choice ADC with the following parameters:

16 bits resolution or more,

Analog input voltage: min -5 v max +5 v.

Output: 16 bits via UART (one wire + ground)

time for converting: not more 1 microsecond

next sample after 50 microsecond

small  size

DIP package or another with distance between pins 2.54 mm

This ADC I shall be use for PIC based metal detector (pulse induction).                            pic16f88

I tried ordering free sample from TI company.  But it is not possible for private person (engineer). How I can resolve this problem.

Thank You

  • 0
    TI__Mastermind 44680 points

    Hi Ilarion,

    Welcome to the TI E2E Forums!

    You can try searching for the device using our search tool: http://www.ti.com/lsds/ti/data-converters/precision-adc-less-10msps-products.page.

    I doubt you will be able to find all of the requirements, specifically in a DIP package. However you could use a 6SOT-23 package with one of our DIP-ADAPTER-EVM boards to test out the device on a breadboard, for example. You probably want a 1 MSPS, SAR ADC with a serial I2C or SPI interface (The PIC16f88 supports these interfaces but check that the clock speed is fast enough. You will not find a one wire UART interface on most ADC's).

    Also, to meet the input range requirement, consider using an external amplifier with bipolar +/- 15V supplies to scale-down the input signal to the ADC input range.

    Regards,
    Chris