Patent ID: 7884440
Filing Date: 2011-02-08
Classification: H01L

Abstract:
1. A semiconductor integrated circuit including digital circuits, analog circuits, and radio frequency (RF) circuits integrated on a single substrate, comprising: the substrate including portions where the digital circuits, the analog circuits, and the RF circuits are to be formed, wherein the digital circuits have an area greater than that of the analog circuits and the RF circuits; a plurality of deep-wells formed to a certain thickness inside the substrate below portions where devices of the analog circuits and the RF circuits are to be formed to reduce cross talk between the devices of the analog circuits and the RF circuits, and the devices of the digital circuits, wherein the deep-wells have a conductive type opposite to the substrate; and a plurality of device isolation structures configured to isolate each device of the digital circuits, the analog circuits and the RF circuits, and have different thicknesses from a top surface of the substrate according to dynamic ranges of the devices, wherein the devices of the RF circuits comprise a RF CMOS device including a RF passive device and a transformer device.