LSR

<p>The work with Nvidia could open the door to other system development opportunities, Zeewaves said.</p>

When EE Times disclosed the Monterey acquisition last week, industry sources said Synopsys would integrate Monterey's Calypso floorplanner into Synopsys' implementation flow and shelve its remaining technology.

Altera Europe , High Wycombe, Bucks HP12 4XF, UK. www.altera.com

Vishay Intertechnology announced four additions to the IHLP family of low-profile, surface-mount inductors, which now includes standard inductance values ranging from 0.10&#181H to 10.0&#181H with typical DCR values as low as 0.47mOhm, saturation currents from 15.5A to 120A, and low losses at frequencies up to 5MHz.

SiT8008AI-32-33E-80.000000T

The new devices provide inductance values of 5.6&#181H, 6.8&#181H, 8.2&#181H, and 10&#181H with a tolerance of ±20%. The patented Vishay Dale IHLP series offers designers higher-performing, power- and space-efficient inductor solutions that measure just 12.9 x 13.2 x 6.5mm. Each inductor is packaged in a self-shielded, composite construction that reduces buzz noise to ultra-low levels while meeting military specifications for resistance to thermal shock, moisture, mechanical shock, and vibration.

Target IHLP applications include dc-to-dc conversion and energy storage in end products such as computers, servers, telecom systems, and automotive electronics. In these systems, IHLP devices handle high transient spikes without saturation and at full rated current provide an inductance drop of less than 20% – significantly less roll-off than ferrite materials.

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All inductors in the IHLP family are 100% lead (Pb)-free and meet RoHS standards. Samples and production quantities of the IHLP-5050FD-01 inductors are available now. Lead time for production quantities is seven weeks.

Vishay Semiconductor GmbH , 74072 Heilbronn, Germany. www.vishay.com

SiT8008AI-32-33E-80.000000T

TOKYO — Elpida Memory Inc., a joint venture between Hitachi Ltd. and NEC Corp., is planning to make an initial public offering of shares on Nov. 15, according to a Reuters report that cited the Tokyo Stock Exchange as its source.

Elpida is the world's six largest DRAM maker and the plan to issue 29.15 million shares is part of an ambitious strategy to build a $4.6 billion wafer fab that would allow the company to compete wth market leaders Samsung Electronics Co. Ltd., Micron Techology Inc. and Hynix Semiconductor Inc., the report said

Design challenge With the increasing desire to move the data converters closer to the antenna, the converter design becomes tougher. In the example shown above, the modulation bandwidth in the W-CDMA mode is more than 20 times higher than the Global System for Mobile Communications (GSM) requirement. But fewer effective bits are required for W-CDMA, because of the large power control range used.

This is the ideal situation in which sigma-delta A/D converters can be used to provide performance on demand. A 2- or 3-bit sigma-delta A/D operating at roughly 50 MHz, with a programmable decimation filter, can meet both 2G and third-generation needs in a cost- and power-efficient manner.

The emergence of standards with very complex modulation schemes, such as IEEE 802.16e, will add even more complexity to the data converter design, however. To handle this increase in complexity, advances in CMOS process technology enable design improvements for data converters in the areas of calibration, higher sampling rates and high-speed signal processing.

A GSM quadband phone typically requires four LNAs and two mixers. With 130-nanometer and 90-nm CMOS technology, CMOS LNAs and mixers for wireless protocols in the 1- to 5-GHz range are easily achievable. The RF circuit topologies, however, have changed to align more with the capabilities of CMOS. The biggest challenge for RF CMOS design is choosing architectures that minimize the number of pins and the area of passive components.

Power amplifiers have always been treated as a separate entity because of their high power dissipation, high-voltage requirements and low-supply-noise requirements. An SDR power amp, in addition to supporting multiband, multimode operation, must be capable of efficient linear and nonlinear amplification.

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