Part Number: FDC2214
The initial testing with the FDC2214 went well and we're moving forward with some proof-of-concept prototypes with a lash-up of EVBs for the next stage of development.
We're using them in differential mode as shown in figure 55 of the datasheet.
A few questions:
Best Regards, Mark P
We tested a few types of inductors and the CMH322522 inductors were the best shielded ones we found. For these surface mount shielded inductors, the noise performance is material and manufacturing-process dependent. The customer can verify the noise performance of a particular type of inductor by soldering it to the EVM and checking the peak-to-peak noise of the data stream.
The initial idrive is not so important. We recommend setting bits 12 and 10 in Register 0x1A - CONFIG to b01 (turning off auto-amplitude correction), and setting the current drive so that the oscillation amplitude of the LC resonator is around 1V to 1.8V.
The LED indicates if the oscillation frequency is close to the default of the EVM. It is not related to any error condition.
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