Part Number: LDC1000-Q1
I noticed in "SNOA931 - LDC1612/LDC1614 Linear Position Sensing" that a racetrack design is suggested for linear position sensing. Figure 6 states that past the innermost turn (highest field density) the response becomes non-monotonic. The suggested design uses a two layer PCB with 28 turns per layer. Am I understanding correctly that if the design was 14 turns per layer on four layers, or even seven turns per layer on eight layers that the usable sensor length would be increased (non-monotonic point moved closer to 100 mm)? How would reducing the number of turns per layer affect the output codes?
I have a design that currently uses two LDC1000-Q1 parts. I am already investigating the LDC1001 as a valid drop-in replacement. If there is a compelling reason to migrate beyond the LDC1001 capabilities then I am open to the idea. At this point I am focusing solely on an optimized coil design.