Bondwire configuration for reduced crosstalk
View Patent ↗To protect victim bondwires in a packaged electronic component from crosstalk induced by noisy aggressor bondwires, shielding bondwires are configured between the victim bondwires and the aggressor bondwires. The shielding bondwires, on either side of the victim bondwires, are connected to the same reference voltage on the package side of the component and to each other on the die side of the component, e.g., via a metal connection mounted on the die. As configured in one embodiment, the shielding bondwires and metal connection form a two-dimensional Faraday cage that shields the victim bondwires from crosstalk induced by the aggressor bondwires.
1. A packaged electronic component comprising:
a die defining a die side of the component;
a package defining a package side of the component; and
a plurality of bondwires interconnecting the die and the package, wherein the plurality of bondwires comprises:
a first set of one or more victim bondwires;
one or more aggressor bondwires on one or both sides of the first set of one or more victim bondwires; and
first and second shielding bondwires between the one or more aggressor bondwires and the first set of one or more victim bondwires, wherein the first and second shielding bondwires are electrically connected (i) to a first reference voltage on the package side of the component and (ii) to each other on the die side of the component, and not otherwise electrically connected on the die side.
2. The invention of claim 1 , wherein the first reference voltage is ground.
3. The invention of claim 1 , wherein the first reference voltage is not ground.
4. The invention of claim 1 , wherein the first and second shielding bondwires are electrically connected to each other on the die side of the component by an electrically conductive connection on the die.
5. The invention of claim 1 , wherein the plurality of bondwires further comprises:
a second set of one or more victim bondwires;
one or more aggressor bondwires on one or both sides of the second set of one or more victim bondwires;
third and fourth shielding bondwires between the one or more aggressor bondwires and the second set of one or more victim bondwires, wherein the third and fourth shielding bondwires are electrically connected (i) to a second reference voltage on the package side of the component and (ii) to each other on the die side of the component.
6. The invention of claim 5 , wherein the first and second shielding bondwires are not electrically connected to the third and fourth shielding bondwires on the die side of the component.
7. The invention of claim 6 , wherein the first reference voltage is different from the second reference voltage.
8. The invention of claim 5 , wherein the first reference voltage is equal to the second reference voltage.
9. A packaged electronic component comprising:
a die defining a die side of the component;
a package defining a package side of the component; and
a plurality of bondwires interconnecting the die and the package, wherein the plurality of bondwires comprises:
a first set of one or more victim bondwires;
one or more aggressor bondwires on one or both sides of the first set of one or more victim bondwires;
first and second shielding bondwires between the one or more aggressor bondwires and the first set of one or more victim bondwires, wherein the first and second shielding bondwires are electrically connected (i) to a first reference voltage on the package side of the component and (ii) to each other on the die side of the component, and not otherwise electrically connected on the die side; and
third and fourth shielding bondwires between the one or more aggressor bondwires and the first set of one or more victim bondwires, wherein the third and fourth shielding bondwires are electrically connected (i) to a second reference voltage on the package side of the component and (ii) to each other on the die side of the component,
wherein the first and second shielding bondwires are not electrically connected to the third and fourth shielding bondwires on the die side of the component.
10. The invention of claim 9 , wherein:
the first and second shielding bondwires are electrically connected to each other on the die side of the component by a first electrically conductive connection on the die; and
the third and fourth shielding bondwires are electrically connected to each other on the die side of the component by a second electrically conductive connection on the die.
11. The invention of claim 9 , wherein the first reference voltage is different from the second reference voltage.