Patent ID: 7501903

Claim:
A method of adjusting a capacitor in an array of oscillators comprising the steps of; measuring a frequency of oscillation of an oscillator in the array, comparing the frequency of oscillation of the oscillator against a reference frequency signal, adjusting a coarse adjust weight capacitor in all oscillators in the array, (a) comparing the frequency of oscillation of the oscillator against the reference frequency signal, (b) adjusting a fine adjust weight capacitor in the oscillator, (c) comparing the frequency of oscillation of the oscillator against the reference frequency signal, (d) latching the value of the fine adjust weight for this oscillator when the frequency of oscillation matches the reference frequency signal, (e) disabling an access to the oscillator, (f) enabling the access to the next oscillator in the array, (g) applying the latched values of the fine adjust weight to the oscillator, repeating steps (a) through (g), until all oscillators have been compared.