ads7951

Robert Pangrazio

Other Parts Discussed in Thread: ADS7951

I am trying to interface with a ads7951. When I recieve data from it it is always the same value, no matter how I change the input. Also the values changes when I restart the microcontroller, or restart the board as a whole.

Any ideas?

over 16 years ago

0 Bonnie Baker - WEBENCH Design Center over 16 years ago

TI__Expert 3555 points

Robert,

This behavior is not characteristic of the ADS7951. Could you please send me your circuit diagram and communicaton timing diagrams so I can try to figure out what is going on?

0 Robert Pangrazio over 16 years ago in reply to Bonnie Baker - WEBENCH Design Center

Prodigy 60 points

It actually appears that it is not the ADC. I have looked at some other signals and they appear to be OK. There are instrumentation opamps before the ADC on this input and I think the problem is there. Thanks for the offer of help.

0 Bonnie Baker - WEBENCH Design Center over 16 years ago in reply to Robert Pangrazio

TI__Expert 3555 points

Robert,

This is not a problem. If you want us to take a look at your instrumentation circuit, please send a diagram our way.

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ads7951