Method of using capacitive bonding in a high frequency integrated circuit
View Patent ↗A method of manufacturing a high frequency integrated circuit begins by positioning a die within a package, wherein the die includes a circuit that processes a high frequency signal and at least one bond pad operably coupled to the circuit, and wherein the package includes a plurality of bond posts, wherein at least one of the plurality of bond posts is allocated to the at least one bond pad. The method continues by bonding a first plate of a capacitor to the at least one bond pad. The method continues by bonding a second plate of the capacitor to the at one of the plurality of bond posts.
1. A method of manufacturing a high frequency integrated circuit, the method comprises:
positioning a die within a package, wherein the die includes a circuit that processes a high frequency signal and at least one bond pad operably coupled to the circuit, and wherein the package includes a plurality of bond posts, wherein at least one off the plurality of bond posts is allocated to the at least one bond pad;
forming a first plate of a capacitor in direct physical contact with the at least one bond pad;
bonding the first plate of the capacitor to the at least one bond pad;
forming a second plate of the capacitor in direct physical contact with the at least one of the plurality of bond posts; and
bonding the second plate of the capacitor to the at one of the plurality of bond posts.
2. The method of claim 1 further comprises:
bonding a first bond of a bond wire to the at least one of the plurality of bond posts; and
bonding a second end of the bond wire to a ground bond pad of the die, wherein inductance of the bond wire in combination with capacitance of the capacitor form at least a portion of an impedance transformation circuit.
3. The method of claim 1 further comprises:
bonding a first end of a bond wire to the at least one of the plurality of bond posts; and
bonding a second end of the bond wire to the at least one bond pad such that inductance of the bond wire and capacitance of the capacitor form a tank circuit.
4. The method of claim 1 , wherein the bonding of the first and second plate further comprises at least one of:
ultrasonic bonding;
ionic bonding; and
thermal compression bonding.
5. A method of manufacturing a high frequency integrated circuit, the method comprises:
positioning a die within a packaqe, wherein the die includes a circuit that processes a high frequency signal and at least one bond pad operably coupled to the circuit, and wherein the package includes a plurality of bond posts, wherein at least one of the plurality of bond posts is allocated to the at least one bond pad; and
creating a dielectric between the at least one bond pad and the at least one of the plurality of bond posts to produce a bond capacitor that electrically couples the circuit to, and is in direct physical contact with, the at least one of the plurality of bond posts.
6. The method of claim 5 further comprises:
bonding a first end of a bond wire to the at least one of the plurality of bond posts; and
bonding a second end of the bond wire to a ground bond pad of the die, wherein inductance of the bond wire in combination with capacitance of the capacitor form at least a portion of an impedance transformation circuit.
7. The method of claim 5 further comprises:
bonding a first end of a bond wire to the at least one of the plurality of bond posts; and
bonding a second end of the bond wire to the at least one bond pad such that inductance of the bond wire and capacitance of the capacitor form a tank circuit.
8. The method of claim 5 , wherein the bonding of the first and second plate further comprises at least one of:
ultrasonic bonding;
ionic bonding; and
thermal compression bonding.