Fujitsu rolls design kit for RF CMOS

SAN JOSE, Calif. — Seeking to propel new designs and product cycle times, Fujitsu Ltd.'s chip unit has introduced a new process design kit (PDK) for its 90- and 65-nm radio-frequency (RF) CMOS technology.

At present, Japan's Fujitsu offers a PDK for its previously-announced 90- and 65-nm RF CMOS processes, based around BSIM transistor models. For some time, Fujitsu has offered a 90- and 65-nm RF CMOS process, which is designed for its own products as well as foundry customers.

In addition to the BSIM offering, the company is now rolling out a PDK, based on PSP transistor models. The PSP model, jointly developed by Pennsylvania State University and Royal Philips Electronics, is said to be the next-generation CMOS transistor model.

The PSP model was selected as the new industry standard CMOS transistor model by the Compact Model Council in 2005. The model succeeds BSIM3 and BSIM4, which had been the industry standard for years.

With its new and current PDK offerings, Fujitsu's RF CMOS processes are said to enable ''first-pass silicon success,'' said David Fung, director of strategic marketing of the Semiconductor Manufacturing Services Business Group within Fujitsu Microelectronics America Inc. (Sunnyvale, Calif.).

The result for customers is reduced development time and faster time-to-market, Fung said.

The PSP-based PDK offering provides ''much better accuracy'' for current and future RF designs, thereby enabling single-chip solutions, he said. In addition, this type of PDK is not offered by competitive foundries, such as TSMC, UMC and others, he added.

Fujitsu is an integrated device manufacturer (IDM), but the company also competes in the ASIC and foundry businesses. It claims to offer both 65- and 45-nm CMOS processes. The company's most advanced processes, including RF CMOS, are handled within its 300-mm fab in Mie, located in central Japan.

In January, Fujitsu (Tokyo) moved to spin-off its semiconductor unit. The new spin-off, Fujitsu Microelectronics Ltd., was incorporated on March 21.

Late last month, Fujitsu Microelectronics Ltd. announced that Tsuneaki Ohara has been assigned as a corporate senior executive vice president of Fujitsu Microelectronics. He will also hold the position of president and CEO of Fujitsu Electronics Inc., which is a subsidiary of Fujitsu Microelectronics Ltd.

On the ASIC and foundry front, Fujitsu is making a big push with RF CMOS. Its new PDKs are aimed for developing high-performance, low-power system-on-a-chip (SoC) designs that integrate RF functions for Bluetooth, GPS, cellular, wireless audio/video, wireless LAN and optical communications.

Fujitsu's PDKs include a set of parameterized cells and toolkits for active and passive devices. The inductor synthesis toolkit generates scalable inductor layout and models for analog and RF circuits. The statistical simulation environment is aimed for yield analysis, process sensitivity and design space exploration.

Both the 90nm CS100A-LL and 65nm CS200L PDKs are available now.

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