LDC1614: Application problems

Zoey,

The best way to minimize the influence of temp is to use PCB components with a low TC, and use a stable external clock with drift over temp.

The effects of mechanical jitter can be minimized by careful mechanical design that reduces vibration of the sensor and target.

I suspect they may be able to reduce the effects of mechanical jitter - assuming this is periodic mechanical vibration - by choosing a sensor frequency that is non-harmonically related to the mechanical jitter "frequency". Note that this is just a guess; we have no experimental data to confirm this.

There are a few app notes that give guidance on EMI and sensor design:

1. EMI Considerations for Inductive Sensing
2. Setting LDC1312/4, LDC1612/4, and LDC1101 Sensor Drive Configuration
3. LDC1612/LDC1614 Linear Position Sensing

More info is available on the [FAQ] Inductive sensing FAQ - Frequently asked questions page. 

Regards,
John