Patent ID: 7829973

Claim:
A decoupling circuit disposed between a first power rail and a second power rail each having a first potential, where a third power rail having a second potential is disposed between the first power rail and the second power rail, where the first potential is different from the second potential, the decoupling circuit comprising: a resistor having a first electrode and a second electrode, the resistor disposed between the first power rail and the second power rail, at least two capacitors, each having a first electrode and a second electrode, the at least two capacitors disposed between the first power rail and the second power rail, the first electrode of the resistor directly electrically connected to the third power rail, and the second electrode of the resistor directly electrically connected to all of the first electrodes of the at least two capacitors, such that the at least two capacitors are electrically connected in series with respect to the resistor, and the at least two capacitors are electrically connected in parallel with respect to one another, the second electrode of a first of the at least two capacitors directly electrically connected to the first power rail, and the second electrode of a second of the at least two capacitors directly electrically connected to the second power rail, where at least one of the resistor and the at least two capacitors is disposed at least in part beneath the third power rail.