Electronic Design

High-Speed Laser-Driver BiCMOS IC Suits 2.5-Gbit/s Applications

The MC2066 is a highly integrated, programmable laser-driver biCMOS IC that's intended for SONET/SDH applications to 2.5 Gbits/s. Using differential PECL data and clock inputs, it supplies bias and modulation current for driving an edge-emitting laser. These inputs minimize pattern-dependent jitter. The device also includes automatic power control for maintaining a constant average output power over temperature and life. The modulation current is temperature-compensated to minimize variation in extinction ratio over temperature. Output flags indicate laser end-of-life as well as failure of the APC circuitry to maintain average output power. This IC also features rise/fall times less than 100 ps, and independently programmable laser bias and modulation currents. It has a bias current to 100 mA and a modulation current to 65 mA at VCC = 3.3 V. Also, it operates with a 3.3-V supply. Available this month in die or in a package, the MC2067 costs $8.00 each in 10,000-unit quantities.

Microcosm, 9140 Guilford Rd., Ste. O, Columbia, MD 21046; (301) 725-2775; fax (301) 725-2941; www.microcosm.com.

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