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Altera_Forum's avatar
Altera_Forum
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13 years ago

ADC Voltmeter

Hi folks,

I am working on a project which involves creating a Voltmeter using the Altera DE2 board coupled with VHDL programming.

I am not familiar with the ADC portion of this project and how I can implement it using the DE2 board and VHDL.

Is anyone familiar with this? If so could you guide me in the right direction, if there are documentations you know of or otherwise?

Parameters:

using 40 pin expansion headers

Altera DE2 Board

VHDL progrmming

external bread board

working kit of multiplexers, switches, comparators, integrators, timers, counters, BCDs, Capacitors, resistors, D-registers, diodes and potentiometers.

Cheers

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    13 years ago

    In another post I suggested use MCP3204 chip. It's a 4 channel ADC converter with a SPI interface. If you use MCP1541 you have a 4,096V voltage reference that gives 1mV x step.

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    13 years ago

    Assuming you are a UBC engineering student:

    implement the dual slope ADC using the integrator/comparator configuration and transfer the control logic over to a VHDL state machine.