This weekend in electronics

All the stuff finally came in to try making my ADC board. Here it is:

The board

The board

The mess

The mess

 

This board is intended to be a general purpose lab DAQ board. Depending on how you set the resistors in the jumper slots, you can sense current, voltage (up to +/- 10V), and set the gain into the ADC and analog output. You can even route the analog output to something else. The way it is designed, it is +/-600V common mode tolerant and has a 130kHz bandwidth. (The main bottleneck being the high voltage differential chip)

 

Other features include:

  • The world’s worst SMD solder job.
  • Mysterious voltage divider behavior.
  • A broken signal generator, so I had to test it with batteries.

:-P. I can fix that. It seems to work though, which is pretty good for my second PCB project.

 

Design Files:

Kicad Files

 

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