Patent ID: 9226386
Filing Date: 2015-12-29
Classification: H05K,Y02P

Abstract:
1. A printed circuit board comprising: a first outer layer; a second outer layer; an integrated circuit mounted on the second outer layer, said integrated circuit having: a single exposed pad electrically connected to a ground reference, a first supply pin electrically connected to a first power supply, a second supply pin electrically connected to a second power supply, wherein the first power supply is configured to generate a first supply current with frequency components higher than frequency components of a second supply current generated by the second power supply; a first decoupling capacitor mounted on the second outer layer in the proximity of the first supply pin, the first decoupling capacitor having a first terminal electrically connected with the first supply pin and having a second terminal; an inner layer interposed between the first outer layer and the second outer layer, the inner layer comprising a metal layer electrically connected to said ground reference; a first via configured to electrically connect the exposed pad with the metal layer of the inner layer; a second via configured to electrically connect the second terminal of the first decoupling capacitor with the metal layer of the inner layer; a second decoupling capacitor having a first pin electrically connected to the second power supply and having a second pin electrically connected to said ground reference, wherein the value of the capacitance of the second decoupling capacitor is greater than the value of the capacitance of the first decoupling capacitor.