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Digital Voltage Meter circuit

  1. Aug 18, 2007 #1
    Hello All,

    I am working on a microcontroller-based control circuit that can generate different frequencies for experiments I am working on, but I also want to add a feature that allows the microcontroller to take voltage measurements from my test setups.

    The 68HC12 controller board I am using does have several A/D converter channels on it but I am wondering if there are any dedicated digital volt meter ICs out there that can take the actual measurements and send back a binary value to my controller. The other reason I don't want to use the microcontroller itself is for isolation reasons. some of the tests I will do could involve voltages as high as 500-1000V so I am really looking for a chip that has the same voltage reading range as a standard DVM. All voltage readings would be DC to keep things simple (see attached diagram). Any help/tips would be greatly appreciated.

    Jason O

    Attached Files:

    Last edited: Aug 18, 2007
  2. jcsd
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