I have picked up this humidity sensor. Datasheet rates it at 330pF at 55 percent RH, with a 0.6pF per percent gradation (so range is 300pF-360pF for 1 percent to 100 percent RH.). Datasheet goes on about saying unit can be used at 1KHz-100KHz. Test setup says it's driven with a 1V P-P 20KHz signal. It does not say if it is DC, AC, or provide a typical application schematic.
My question is how would I go about making a proportional voltage output interface for this sensor, that I can feed into an ADC for reading? I have checked other datasheets, only thing that came close to something usable used a 555 to output variable frequency. I would like to avoid the 555 (and also avoid a MATCH interrupt) if at all possible.