in our applications we are using 6pf and 12 pf watch crystals
We don't recognize requirements for AD7708 oscillator. Have we to use a 6pf crystal, a 12pF one or we can use both without problems?
Thank you for your help
I was wondering the same as there is no explanation at all about requiered load capacitance of the crystal, so unexpected behaviour could happen in cas of strong mismatch. Please Analog staff give us more information about this topic.
As mentioned in the datasheet sometimes a capacitor needs to be connected in the crystal to ensure that the resonator does not oscillate at overtones of its fundamental operating frequency. The capacitor requirement are specified usually in the crystal's datasheet.