High-Speed Integrated Circuits for 10 Gigabit-Per-Second
Networking Systems:
Lucent Technologies Introduces High-Speed Integrated Circuits for 10 Gigabit-Per-Second Optical Networking Systems
MUNICH, Germany, Sep 4, 2000 (BUSINESS WIRE) -- Lucent Technologies (NYSE: LU chart, msgs) Microelectronics Group, the world leader in communications semiconductors, today announced the industry's first complete set of high-speed integrated circuits (ICs) for 10 gigabit-per-second (Gbit/s) synchronous optical networking (SONET) and synchronous digital hierarchy (SDH) optical networking systems.
The new ICs -- a clock synthesizer/data multiplexer, clock recovery/data demultiplexer, laser driver, modulator driver, limiting amplifier and transimpedance amplifier - incorporate design innovations from researchers at Lucent's Bell Labs. Using silicon germanium (SiGe) and gallium arsenide (GaAs) technologies, the new ICs offer a comprehensive OC-192 (STM-64) solution for such optical networking applications as digital cross connects, add-drop multiplexers (ADMs), switches, routers, repeaters and access equipment. OC-192 is one of the fastest-growing market segments for optical networking systems being deployed today.
The company is exhibiting the new SiGe and GaAs ICs along with its line of optoelectronic components here at the 26th European Conference on Optical Communication (ECOC), September 4-6.
"Our latest end-to-end portfolio of high-speed devices strengthens Lucent's position as the only major stand-alone semiconductor business with leadership in both optoelectronic components and integrated circuits," said Keith Woomer, marketing director with Lucent's Microlectronics Group. "Our customers now have access to a complete set of OC-192 chips to meet the demands of today's high-performance, high-bandwidth optical communications systems."
The clock synthesizer and data multiplexer (TTRN0110G) and the clock recovery and data demultiplexer (TRCV0110G) are implemented in Lucent's SiGe technology for high-speed, low-noise and low-power performance. The SiGe technology is a process module in the company's COM1 quarter-micron complementary metal oxide semiconductor (CMOS) modular fabrication process. Both these devices exceed SONET/SDH standards for jitter.
The TTRN0110G multiplexes 16 parallel 622.08 megabit-per-second (Mbit/s) data lines and generates a 10 Gbit/s clock and data output. A unique feature of the multiplexer is clockless data transfer -- no clock is required to feed in the 16 data lines, providing higher performance than traditional FIFO and delay line solutions. Alternatively, contra-clocking may be used, whereby the device provides one of four phases of a 622.08 megahertz (MHz) clock output back upstream to the data chip. The TRCV0110G integrates the clock and data recovery with a 1-to-16 data demultiplexer.
Both devices use low-voltage differential swing (LVDS) data interfaces and operate at the SONET/SDH OC-192 rate of 9.9532 Gbit/s, the forward error correction rate (FEC) of 10.6642 Gbit/s., and the serial 10 Gbit/s-Ethernet rate of 10.3125 Gbit/s. The combined power dissipation is currently 3.0 to 3.7 watts, depending on feature use, with a migration to 1.8 to 2.2 watts by next year. Both the TTRN and TRCV are supplied in a small ball grid array (BGA) package and interface with Lucent's TSOT0410G system-on-a-chip for linear and ring ADM applications.
The laser driver (TLAD0110G) and the modulator driver (TMOD011G) are current and voltage drivers used to drive lasers and modulators in 10 Gbit/s optical transmission systems. They contain four cascaded stages and accept ECL level inputs. The TMOD0110G is available in two versions (-5.2 and -6.8-volt power supply) and is capable of driving Lithium Niobate modulators. Both versions of the TMOD0110G are supplied in 32-lead hermetic packages. The TLAD0110G contains a patented output buffer for superior return-loss without compromising power dissipation. It is available in die form.
The limiting amplifier (TLMA0110G) provides 33 dB of gain and eight gigahertz (GHz) of bandwidth and has a typical single-ended input sensitivity of seven milli-volts peak-to-peak. It also features a user-adjustable threshold control for optimizing performance. The transimpedance amplifier (TTIA0110G) is a hybrid IC that combines a transimpedance amplifier die with the necessary filtering to achieve an ultra-wide dynamic range amplifier. A typical application is a low-noise, high-speed optical receiver when combined with an Avalanche Photo Detector (APD) or positive intrinsic negative (PIN) photodetector.
The drivers and amplifiers are implemented in a three-level metal quarter-micron Pseudomorphic High Electron Mobility transistor (PHEMT) GaAs technology which was developed specifically with the appropriate breakdown voltage and noise characteristics to realize superior performance in these types of optical interface devices.
Samples of the new ICs are available now, with volume production expected by the first quarter of 2001. Unit pricing for the new ICs ranges from US$190 to US$300 in quantities of 10,000.
For more product information, customers may call the Microelectronics Group Customer Response Center, 1-800-372-2447, Dept. N47 (in Canada, 1-800-553-2448), Dept. N47; fax number 1-610-712-4106 (especially for callers outside of North America) or write to Lucent Technologies, Room 30L-15P-BA, 555 Union Boulevard, Allentown, Pa. 18109. The direct dial number for international inquires is 1-610-712-4323. Email: docmaster@micro.lucent.com.
Lucent Technologies, headquartered in Murray Hill, N.J., USA, designs and delivers the systems, software, silicon and services for next-generation communications networks for service providers and enterprises. Backed by the research and development of Bell Labs, Lucent focuses on high-growth areas such as broadband and mobile Internet infrastructure; communications software; communications semiconductors and optoelectronics; Web-based enterprise solutions that link private and public networks; and professional network design and consulting services. For more information on Lucent Technologies, visit its Web site at lucent.com.
Lucent Technologies Microelectronics Group is the $4 billion world leader in semiconductors for communications applications. Lucent has announced it will spin off the Microelectronics Group as an independent company that will include its optoelectronics and integrated circuits divisions. The spin-off, slated for completion by the summer of 2001, will create the only major stand-alone semiconductor company that can offer end-to-end networking solutions that address the convergence of photonics and electronics based on leadership in both integrated circuits and optoelectronic components. The new company will also provide wireless computer networking system solutions through its ORiNOCO(TM) product line. More information about the Microelectronics Group is available from its web site at lucent.com. |
