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LDC1312: Relationship betweenCH0 data and measurement distance

Chu Allen
Intellectual 810 points
Part Number: LDC1312

Tool/software:

Dear Teams,

1. LD1312 uses channel CH0 to read data from DATA_C0.

Is DATA_C0 used as the basis for determining distance?

Do we still need to calculate the distance to the target through formula conversion?

2. What is the relationship between reading DATA_C0 data and actual distance when there is currently no gain enabled?

3. b00:ch0,ch1

    b11:ch0,ch1.   Can both of these configurations be used?

  • 0
    TI__Mastermind 40295 points

    Chu,

    You can directly calculate the sensor frequency from the output data and the known reference clock frequency using equations (4) or (6) in the data sheet:

    From there, you will can calculate the sensor inductance via the well-known ωo = 1/√(LC) using the known sensor frequency and sensor capacitance.

    You will then need measured data, a mathematical expression, or EM simulations to determine the relationship between your sensor's inductance and the distance to the target.
    If you are using a round spiral or racetrack sensor, you can use the Inductive Sensing Design Calculator Tool to calculate that.

    You can use b00or b11 configurations.

    Regards,
    John