To: Thai Chung who wrote (1567 ) 9/14/1998 12:53:00 PM From: John F. Respond to of 4710
Company Press Release Monday September 14, 8:24 am EST Family of 2.5Gb/s Optoelectronic Driver ICs Introduced by Vitesse New V-DRIVE 2.5 ICs Target SONET/SDH and WDM Communications CAMARILLO, Calif.--(BUSINESS WIRE)--Sept. 14, 1998--Vitesse Semiconductor Corp. (Nasdaq:VTSS - news) Monday announced the introduction of the V-DRIVE 2.5 family of 2.5Gb/s optoelectronic driver ICs that include a selection of five new voltage and current drivers. These circuits are designed to operate with today's SONET/SDH lasers and optical modulators and they dramatically lower the cost and simplify the implementation of OC-48/STM-16 optoelectronic modules. The drivers are compatible with Vitesse's extensive line of 2.5Gb/s SONET/SDH multiplexers ICs. The V-DRIVE 2.5 family also joins the recently announced V-FRAME 2.5 family of SONET and ATM UNI and framer chips, further extending Vitesse's dominance in the 2.5Gb/s communications physical layer IC market. Until now, ICs for current and voltage driving of 2.5Gb/s optical components were only available from a limited number of suppliers because mainstream silicon technologies are either too slow or use too much power to achieve the required operating speed. Typically, 2.5Gb/s optoelectronic ICs are produced in low-capacity Gallium Arsenide (GaAs) foundries. The resulting high component costs (a legacy driver IC costs upwards of $150) contributes to the high price of OC-48 optoelectronics. Vitesse, however, has been able to successfully extend its high-volume, digital GaAs manufacturing capability to high-speed analog functions. Vitesse's high-yielding and volume test production techniques now enable Vitesse to deliver the required optoelectronic ICs at a new price point, typically half the cost of a legacy unit. A 2.5Gb/s laser driver IC takes a serial ECL data stream, typically derived from a 2.5Gb/s multiplexer, and uses it to modulate the bias of a laser. This requires that the output of the IC be able to control a sufficiently high level of current to properly bias the laser in the on-state and to switch the current on and off with sufficient speed to maintain error-free bit transmission. The Vitesse laser drivers typically deliver up to 60mA of programmable modulation current and 50mA of programmable bias current. The bias can be switched with less than 100pS (20%-80%) rise and fall times. Rise times and jitter specifications surpass OC-48/SDM-16 requirements. A 2.5Gb/s modulator driver performs a similar function, but is designed to vary the bias voltage across an optical modulator. For this reason, these devices are often referred to as voltage drivers. Vitesse modulator drivers provide 3V output voltage compliance into 50(omega) and also meet SONET/SDH jitter and rise time specifications. These devices are ideal for implementing multi-channel Wavelength Division Multiplexing (WDM) systems. The three new V-DRIVE 2.5 laser drivers, the VSC7923, VSC7926 and VSC7927, provide various combinations of differential or single-ended inputs, with or without on-chip data reclocking. The three ICs also feature data density monitor outputs to allow the user to adjust bias in highly unbalanced data transmission conditions. These devices join the VSC7924 laser driver, which is a drop-in replacement for legacy devices, and the VSC7925 laser driver, both of which have been available for more than a year and today are being used in new system implementations. The new V-DRIVE 2.5 modulator drivers include the VSC7934 voltage driver, a drop-in replacement for legacy devices, and the VSC7937 modulator driver with on-chip, selectable data reclocking. ''Two years ago we learned that designers of 2.5Gb/s telecommunications equipment were very constrained by the limited availability of SONET/SDH-quality laser drivers,'' stated Ray Milano, director of optoelectronic products at Vitesse. ''As we were, and still are the primary supplier of digital 2.5Gb/s mux and demux ICs, our customers urged us to develop compatible analog driver functions. The result is the V-DRIVE 2.5 family.'' Optoelectronics is now a very successful business group within Vitesse. As well as laser and modulator drivers, Vitesse optoelectronic products include an extensive range of 622Mb/s and 1.25Gb/s transimpedance amplifiers. Amplifiers for 2.5Gb/s SONET/SDH applications are nearing completion. Vitesse is also able to integrate analog driver functions with multiplexers, as demonstrated by the VSC8161 single-chip 16-bit mux/clock multiplier/laser drive IC. The devices in the V-DRIVE 2.5 family operate effectively at lower speeds and are suitable for 622Mb/s use (OC-12/STM-4) and gigabit applications such as Fibre Channel and Gigabit Ethernet. Additionally, Vitesse provides optional screening of 2.7Gb/s SONET/SDH operation for use in systems that employ in-band Forward Error Correction (FEC). All devices operate from a single 5V supply and dissipate less than 1.1W. Packaging options include 24-pin metal glass and 24-pin ceramic, formed or straight leads, dependent on the specific device. Unpackaged devices are also available. Pricing varies between devices but for unpackaged parts is typically less than $90, in quantities of 5000, and less than $105 for packaged parts. Vitesse Semiconductor is a world leader in the design, development, manufacturing and marketing of high bandwidth communications and Automatic Test Equipment (ATE) integrated circuits (ICs). The company's products address the needs of telecommunications, datacommunications and ATE equipment manufacturers who demand a combination of high-speed, high-complexity and low-power dissipation. Vitesse corporate headquarters is in Camarillo, with its second fabrication facility in Colorado Springs, Colo., currently ramping volume supplies of ICs. Company/product information can be found on the Web at www.vitesse.com. ---------------------------------------------------------------------- Contact: Vitesse Semiconductor Corp., Camarillo Patricia Ito, 805/388-3700 ito@vitesse.com or CMC Public Relations Caroline Melnicoff, 650/324-8819 cmp1@earthlink.net