Lead frame with noisy and quiet VSS and VDD leads

摘要

A lead frame with separate noisy and quiet VSS leads terminating in a single pin and separate noisy and quiet VDD leads terminating in a single pin. Each noisy lead portion has a line width greater than its corresponding quiet lead portion to reduce noise in the quiet lead portion. Further, line lengths of the noisy and quiet lead portions for the VSS leads are made longer than the noisy and quiet lead portions for the VDD leads, or in other words the paddle is moved toward the VSS leads to reduce ground bounce. Additionally, the noisy and quiet leads overlie a floating conductive plane to further reduce inductance.