SUNNYVALE, Calif.--The U.S. semiconductor division of Oki Electric Industry Co. Ltd. today announced three second-generation gallium-arsenide (GaAs) devices for high-speed networking applications--a 16:1 multiplexer, a 1:16 demultiplexer, and the industry's first 2-volt limiting amplifier made with GaAs.
The three new GaAs devices are designed for both receiver and transmitter applications at optical carrier rates of 10 gigabits per second (OC-192), Oki said. "Using the material of choice for high-speed networking chips, Oki's new GaAs devices surpass the requirements of system manufacturers and support the exploding bandwidth demands created by the growth of the Internet and new technologies such as ADSL and cable modems," said Moni Mathew, director of Oki Semiconductor's GaAs and RF products, based in Sunnyvale.
Oki said its second-generation limiting amplifier reduces total power consumption by as much as one half compared to other devices. The Japanese GaAs chip maker also claimed that its 16:1 mux and 1:16 demux devices are the first products of their kind in production, operating at an unprecedented maximum speed of 12.5 GHz.
The KGL4221 16:1 mux and the KGL4222 1:16 demux chips are designed to transfer data to and from lower frequencies by synchronously merging 16-bit parallel data streams. The 16:1 multiplexer and demultiplexer are manufactured with Oki's 0.2-mm gate-length GaAs MESFET process. Oki said it uses a unique flip-flops--called MCFF for Memory Cell type Flip Flop--and direct-coupled FET Logic (DCFL).
The GaAs limiting amp, 16:1 multiplexer and 1:16 demultiplexer are available now. In small-quantity volumes, the devices are priced under $2,000 each.