It is crucial to consider the operating conditions for the LDC3114 that will be designed into a system, making sure that the device specifications are not violated at any point in the desired target range. The sensor frequency is an important specification that shifts as the distance from the target changes. Sensor frequency is highest when the target is closest, and it is important to consider the entire desired distance range when designing a sensor.

For larger distances, choose a lower-frequency sensor. The inductance and capacitance determine the sensor frequency, and these can be controlled by the size and number of turns of the sensor, as well as the sensor capacitor. Figure 2-2 shows the relative inductance of a sensor as related to distance.