Patent ID: 6888430
Filing Date: 2005-05-03
Classification: H03H,H03M

Abstract:
1. An integrated circuit component for radiofrequency applications in a predetermined frequency range, the circuit component comprising: a first terminal for a tuning voltage; a second terminal for a trimming voltage; a resonant circuit including an inductor, a tuning diode and a capacitor having a capacitance value being set by said tuning diode, said tuning diode connected to said first terminal, said resonant circuit exhibiting a resonant frequency, said resonant circuit including a trimming diode for compensating for production-dictated deviations in said resonant frequency of said resonant circuit, said trimming diode connected to said second terminal; and a digital-to-analog converter for generating the trimming voltage from a reference voltage and a supply voltage in accordance with a digital value; said digital-to-analog converter having an output connected to said second terminal; said digital-to-analog converter including a chain of series-path resistors and parallel-path resistors connected between said series-path resistors; said digital-to-analog converter including fusible links; said digital-to-analog converter including a ground line for receiving a ground potential and a reference voltage line for receiving the reference voltage; said fusible links connected to at least one of said parallel-path resistors; said fusible links configured for selectively connecting said parallel path resistors to a line selected from a group consisting of said ground line and said reference voltage line; and said trimming diode being controlled by the trimming voltage.