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ucts as soon as early 2005. www. zigbee.org
Georgia Tech has developed a mi- crogenerator that is about 10 milli- meters wide. When coupled with a similarly sized gas-fueled microtur- bine engine, the system, called a mi- croengine, has the potential to deliver more energy and last 10x longer than a conventional battery. The MEMS- based microgenerator produces use- ful amounts of electricity by spinning a small magnet above a mesh of coils fabricated on a chip. The device’s magnet spins at 100,000 rpm, pro- viding the capability to produce 1.1 watts of power. If the project reach- es its projected goal, it will eventu- ally produce as much as 20 to 50 watts. www.gatech.edu ■
Broadcom has introduced the BCM7411 video processor chip, which supports H.264 advanced vid- eo compression technology (also known as MPEG-4 Part 10/Ad- vanced Video Coding (AVC)). The device is Broadcom’s third-genera- tion silicon implementation to sup- port the H.264 video compression specification. Customers are expect- ed to announce products incorporat- ing the BCM7411 by early 2005. Daniel Marotta, Group VP, Broad- band Communications Group; Peter Besen, VP, Consumer Electronics Group. www.broadcom.com
CamSemi’s has unveiled its technol- ogy for the power IC market, which combines the fastest high-voltage Lateral Insulated Gate Bipolar Tran- sistor (LIGBT) and sophisticated
low-voltage control circuitry on a single silicon chip. Compared with current power IC technologies, Cam- Semi’s PowerBrane approach can deliver a 3x increase in current den- sities (at 30 A/cm2) and switching speeds up to 10x faster than typical. The technology is fully CMOS-com- pliant.
Today’s power semiconductor mar- ket, which is estimated to be worth more than $16 billion, is dominated by MOSFET-based technologies, which are limited by the size and lower power densities of these devic- es, according to CamSemi. LIGBTs feature smaller size and higher pow- er densities; however, their use has been restricted by low speed and dif- ficulty in isolating them electrically from low-voltage control circuitry. CamSemi has developed an approach that overcomes these technical hur- dles.
PowerBrane uses a CMOS-compli- ant MEMS process step to selective- ly remove the substrate under the buried oxide and to leave an ultra- thin membrane that supports the high voltage without compromising the on-state current capability of the de- vice. The resulting isolating mem- brane increases the breakdown voltages of LIGBTs 20x and deliv- ers turn-off times of < 50ns. Devices can be switched at over 500 KHz, with the prospect of increasing to 1 MHz.
This generation of CamSemi’s tech- nology offers particular advantages in high volume ‘off-line’applications rated up to 200W. IMS Research es- timates that the global merchant market for AC-DC SMPS in this power range was worth $4.8 billion in 2004 (approximately 1 billion units), offering a semiconductor mar-
ket opportunity of approximately $635 million.
CamSemi was founded by Professor Gehan Amaratunga and Dr Florin Udrea in August 2000 when it was spun out of Cambridge University’s Department of Engineering with seed investment from the Cambridge Uni- versity Challenge Fund. 3i led a £3.75m investment into the compa- ny in December 2002, along with Scottish Equity Partners, TTP Ven- tures, Odyssey Ventures and Cam- bridge University. The company plans to introduce its first products in 2005. www.camsemi.com
Chipcon has introduced the CC2430, a single-chip IEEE 802.15.4 and ZigBee solution. The device combines the features of the CC2420 802.15.4-compliant and ZigBee-ready RF Transceiver with an 8051 MCU, 128kByte of FLASH memory, 8kByte of RAM plus many other features, including ADC, sev- eral timers, AES-128 co-processor, USARTs, watchdog timer, Sleep- mode timer with 32 kHz crystal os- cillator, Power-On-Reset, Brown-out-detection and 21 pro- grammable I/O pins. During receive and transmit, the current consump- tion is as low as 27mA, which is claimed to be far ahead of compet- ing chipset solutions. Samples in Q2’05; < $4 in millions. The ZigBee Alliance has set the long-term target for the BOM for a ZigBee solution to be $3. John Helge Fjellheim, VP Worldwide Sales. www.chipcon.com
Conexant has introduced the CX2418X family of decoders com- pliant with the MPEG-4 advanced video coding (AVC)/H.264 standard, also known as MPEG-4 Part 10, for high-definition digital broadcast tele- vision systems. MPEG-4 AVC/
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