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how to have this DAC0800 configuration working...

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jumpman

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Hello, i am trying to have this circuit working. I have the Serial to Parallel Converter connected to the input pins of the DAC (SPI intead of just the parallel interface cause i prefer to use less pins of my microcontroller...). The DAC is supplied by a DC DC converter (5 V -> +-12 V). I have already tested if everything is well powered... I checked the output pin of the DAC and it is always stuck at 9.5 V =S. I even checked the input pins without the influence of the S/P converter and they are all stuck at 1.3 V ?!

Could anyone tell me what's wrong with this configuration?



Offset circuit.jpg
 

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