interfacing adc4 with 8051

Discussion in 'Embedded Systems and Microcontrollers' started by raghuvarman, Sep 10, 2011.

  1. raghuvarman

    Thread Starter New Member

    Sep 10, 2011
    1
    0
    hi friends,
    i am working on running a motor(dc) by signal from lm35 converted to digital by adc0804 and given to 89c251 then the motor part comes...i need help on how to interface adc and 8051...pls help me with this...
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Have you got the data sheet for the converter? - http://www.national.com/mpf/DC/ADC0804.html#Overview

    You will need an op amp to amplify the LM35 output before the ADC0804 can use it.

    Have you considered the accuracy you need? An 8 bit converter is only good for one part in 256. Is that enough to resolve the temperature for your application?
     
Loading...