Patent ID: 6476682
Filing Date: 2002-11-05
Classification: H03J,H03L

Abstract:
A method for calibrating a temperature compensated oscillator, the method comprising the steps of:storing during the manufacturing process a table of fixed capacitance values; operating the temperature compensated oscillator at a first temperature to generate a first clock signal at a first clock rate; adjusting a parameter of a capacitance load to a first value such that the generated first clock signal is varied from the first clock rate to a preferred clock rate; storing a first indicator corresponding to the first value and the first temperature; operating the temperature compensated oscillator at a second temperature to generate a second clock signal at a second clock rate; selecting from at least two possible capacitance loads, from a plurality of prestored fixed capacitance values to a second value, such that the generated second clock signal is varied from the second clock rate to the preferred clock rate; and storing a second indicator corresponding to the second value and the second temperature.