Patent ID: 7023706
Filing Date: 2006-04-04
Classification: H01L

Abstract:
1. A semiconductor device having a power amplification circuit, comprising: a wiring substrate having a main surface and a back surface opposite to the main surface; a first semiconductor chip mounted over the main surface of the wiring substrate; a second semiconductor chip mounted over the back surface of the wiring substrate, a plurality of external terminals provided over the back surface of the wiring substrate; a sealing portion covering the first semiconductor chip; and a control circuit formed in the first semiconductor chip; wherein the control circuit controls the power amplification circuit; the power amplification circuit is comprised of serially coupled plural-stage circuits; the plural-stage circuits include a first-stage circuit and a final-stage circuit; the first stage circuit of the power amplification circuit is formed in the first semiconductor chip; the final-stage circuit of the power amplification circuit is formed in the second semiconductor chip; and the second semiconductor chip is larger in an amount of heat generated than the first semiconductor chip.