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Altera_Forum
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8 years ago

Driving Ladder DAC

Hi, Im trying to drive a resistor ladder DAC from my DE-1 SOC board, despite of my DAC being very accurate im getting somewhat shotty results. The setup is relatively simple driving the resis...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

What should the waveform look like?

Do you have passive pullups and/or bus hold function enabled on those I/Os?

Can you set all the outputs to Z, and then only drive one bit (ie, the msb) between Z and 1 (or Z and 0) and capture the waveform?