Method and apparatus of a resonant oscillator separately driving two independent functions

A differential VCO (Voltage Controlled Oscillator) comprising:

• an output node and an inverse output node of said differential VCO;
• a first interconnect coupling said output node to a first function;
• a second interconnect coupling said inverse output node to a second function;
• a first interconnect capacitance of said first interconnect;
• a second interconnect capacitance of said second interconnect;
• a first function capacitance of an input of said first function;
• a second function capacitance of an input of said second function, wherein
• said first interconnect capacitance or said second interconnect capacitance is adjusted such that a first summation of said first interconnect capacitance and said first function capacitance substantially equals a second summation of said second interconnect capacitance and said second function capacitance;
• and
• an inductor connected between said output node and said inverse output node.

A differential VCO (Voltage Controlled Oscillator) comprising:

• an output node and an inverse output node of said differential VCO;
• a first interconnect coupling said output node to a first function;
• a second interconnect coupling said inverse output node to a second function;
• a first interconnect capacitance of said first interconnect;
• a second interconnect capacitance of said second interconnect;
• a first function capacitance of an input of said first function;
• a second function capacitance of an input of said second function, wherein
• said first interconnect capacitance or said second interconnect capacitance is adjusted such that a first summation of said first interconnect capacitance and said first function capacitance substantially equals a second summation of said second interconnect capacitance and said second function capacitance;
• and
• an adjustment of said first interconnect capacitance and second interconnect capacitance is due to a change in a geometric structure of patterned metal layers in a die.