6 and half voltmeter; 1V-1.1V dc

Discussion in 'General Electronics Chat' started by Vindhyachal Takniki, Nov 3, 2014.

  1. Vindhyachal Takniki

    Thread Starter Member

    Nov 3, 2014
    349
    6
    1. I have to make 6 and half digital multimeter with high accuracy & resolution with voltage range 1V to 1.1Vdc
    Reading should be updated every 1 sec.

    2. I have selected ADS1246 , will it be able to measure to that resolution i.e for measuring 6 and half

    3. If not, anyone else suggest other circuit
     
  2. crutschow

    Expert

    Mar 14, 2008
    13,042
    3,243
    The ADS1246 appears to be adequate to provide the resolution you need.
    Will this be interfaced to a microprocessor?
    Are you then converting the digital output to a digital display?
     
  3. Vindhyachal Takniki

    Thread Starter Member

    Nov 3, 2014
    349
    6
    Yes there is digital display.
    Will interface ADS124 with ST MCU & lcd
     
  4. Vindhyachal Takniki

    Thread Starter Member

    Nov 3, 2014
    349
    6
    I have to make it on my own board. So cannot purchase directly 6 and half multimter.

    How it is done in multimeters like of FLUKE. Obviously companies won't open their schematic.
    But just how it is done with so much accuracy.


    meanwhile I am going ahead with ADS1246, 5 sps , external reference, separte digital and analog supplies , update reading every 2 sec, take average of 10samples & will see the results
     
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