• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 46 subscribers
  • Views 245 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ADS131A02: Is there a way to configure this part as single ended supply by hardware setting?

Hongjia-Wu
Expert 5130 points
Part Number: ADS131A02

Hi team,

As indicated in the datasheet, the value of VNCPEN determines the power supply as dual-ended or single-ended. Is this the only way to configure this part as single-ended supply? Is there another way by hardware setting?

Thank you.

  • 0
    TI__Guru* 92715 points

    Hongjia,


    Setting the VNCPEN enables the negative charge pump which allows for a greater input range. This basically sets the devices's own negative charge pumped supply so that the input range can from AVSS-1.65V. VNCPEN can only be set through writing to the register to set the VNCPEN bit in the SYS_CFG register. This cannot be set through any hardware setting.

    However the ADS131A02 supplies can be set to a bipolar supply. To do this use ±2.5V supplies. AVDD can be set to 2.5V and AVSS can be set to -2.5V. This would similarly allow for a larger input voltage range.



    Joseph Wu