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ADS1230 interfacing PIC16F877A

ajith kumar
Intellectual 320 points
Other Parts Discussed in Thread: ADS1230

Dear Sir,

         I have one doubt, regarding Power Down mode in ADS1230.In my first program to interface ADS1230 with pic16f877a,i make Power Down mode 'ON' at first,and always it remains at 'ON' state while reading the data.But in my improved code i make it ON and read the data,and then RESET the ADC,by making Power Down OFF.Then again this procedure continues,during data read..if  there is any problem , if i make Power Down ON and OFF during data read ..I m in confusion which procedure is more stable,Please suggest....Thanks IN ADVANCE ...........by

                                 Ajith

  • 0
    TI__Guru** 113765 points

    Ajith,

    There should be no problem using the power down mode.  The upside is it does save power as well as reset the modulator and digital filter.  Then down side is there is startup time required of about 8us.  As far as stability, I can't answer that specifically as I don't know exactly what changes you made to the code.  In general the more complex you make things the less stable it will become.

    So the advantage of the power down is to save power when not taking measurements.  If you are continuously taking measurements, then there is no advantage in using power down.  If you are using power down just to reset the ADC, then I would not do it.

    Best regards,

    Bob B