Who knows: Low cost Programmable capacitor

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PaulHolland

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programmable capacitor

Hi, I am looking for a low cost programmable capacitor (2 - 10pF) this is about the range I am looking for cost is most important who knows ??.

Please no: MAXIM since I already know and its very expensive. Also Intersil I know already.. looking for other options.
 

Use a varicap diode controlled by a D/A converter. The D/A converter can be realized by an opamp and a bunch of resistors.
 

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