LDC1612: Possible resolution for our device

Egon Hirsch

Expert 3550 points

Part Number: LDC1612

Hello all,

my customer want's to build up a pressure sensor. The maximum distance he has to measure is 0.8mm.

To achieve the necessary accuracy he needs at least a resolution of 1µm.

Is this achievable with our device?

Best regards

Egon

over 4 years ago

0 Nicole Khoury over 4 years ago

TI__Genius 10080 points

Hello Egon,

Yes, I believe that this is possible. Section 8.2.6 of the datasheet has various application curves (Figures 60 through 62) that further illustrate precision and target distance, as well as the specific system setup that was used.

Best regards,

Nicole

0 Egon Hirsch over 4 years ago in reply to Nicole Khoury

TI__Expert 3550 points

Hello Nicole,

we got another challenge. The housing of the pressure sensor allows only a coil diameter of 5mm.

See you still a chance to realize this?

Best regards

Olaf

0 Nicole Khoury over 4 years ago in reply to Egon Hirsch

TI__Genius 10080 points

Hello Olaf,

The system resolution will depend on a number of variables in addition to coil diameter, such as target size, the target material, the target orientation and distance from the sensor coil, and your noise floor.

I recommend the following application notes for the best ways to achieve high resolution:

In addition to these application notes, the Inductive Sensing Design Calculator Tool is linked in the LDC1612 product folder and can be used to calculate the optimal sensor design for your application.

Best regards,
Nicole

Sensors

Sensors forum

LDC1612: Possible resolution for our device