Other Parts Discussed in Thread: LDC1614,
Tool/software:
Hi,
I am currently working with the LDC1614EVM in combination with a custom coil. This coil is part of a transformer that includes a second coil, which is incorporated into an LC resonant circuit. By varying the capacitor in the resonant circuit, I aim to detect changes in frequency using the LDC1614.
However, I have encountered an issue. There are two resonant frequencies present (measured with an impedance analyzer):
- The resonant frequency of the coil directly connected to the LDC1614 (approximately 900 kHz).
- The resonant frequency of the LC circuit (approximately 300 kHz), which is the frequency of interest.
The problem is that the resonant frequency of the coil connected to the LDC1614 is significantly more dominant, making it difficult to detect the resonant frequency of the LC circuit.
My question:
Is it possible to specify or limit the operating frequency range of the LDC1614? I am particularly interested in detecting frequencies in the range of 100 kHz to 500 kHz. Currently, the LDC1614 appears to operate over its default range of 1 kHz to 10 MHz. Is there a way to configure it to focus specifically on the desired frequency range (100 kHz to 500 kHz) to better isolate the signal of interest?
Thank you very much for your assistance.
Best regards,
Florian
