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LDC2114EVM: Output settings

Danilo A.
Mastermind 27120 points
Part Number: LDC2114EVM
Other Parts Discussed in Thread: LDC2114

Hi Team,

Our customer is currently doing research on inductive metal sensing and using the LCD1314EVM and the LCD2114EVM. He noticed that the 2 boards output the raw code differently. When the LCD1314EVM detects a metal presence it starts collecting data and keeps the data stream “HIGH” as long as it stays there. The LCD2114EVM do not do this. It goes “HIGH” when it detects a presence and slowly go to “LOW” while the presence is still there.

He would like to know if it is possible for the LCD2114EVM to show its data as the older LCD1314EVM does? Is there a setting he could change somewhere or is it a bit in a register?

Regards,

Danilo

  • +1
    TI__Mastermind 24395 points

    Hello Danilo,

    I think this might be related to the LDC2114 having baseline tracking.  Per section 8.1.9 of the datasheet, you should be able to pause the tracking for a particular channel after the output is asserted.  You would do this by setting the corresponding BTPAUSE bit in Register BTPAUSE_MAXWIN (Address 0x16) to b1.