Can AD654 used an capacitor to frequency converter? that is to fix Vin, instead, to change capacitance( several pF ), is it feasible?
AD654
Not Recommended for New Designs
The AD654 is a monolithic V/F converter consisting of an input amplifier, a precision oscillator system, and a high current output stage. A single RC network...
Datasheet
AD654 on Analog.com
Can AD654 used an capacitor to frequency converter? that is to fix Vin, instead, to change capacitance( several pF ), is it feasible?
Hello HiEmma,
the AD654 cannot be used as a capacitance to frequency converter. Analog Devices do manufacture capacitance to digital converters, the output being a 16 or 24-bit digital value that corresponds to the capacitance on the input. I suggest you review these parts. Two such parts are the AD7745 or AD7746.
Regards,
Mary.