Abstract
A monolithic integrated modulator driver with a data decision function for high-speed optical fiber links is presented. The integrated circuit (IC) was manufactured in a 0.2-/spl mu/m gate length AlGaAs/InGaAs high electron mobility transistor technology with an f/sub T/ of 68 GHz. The modulator driver IC features differential configuration and operates up to 40 Gb/s with a clock phase margin of 210/spl deg/ and an output voltage swing of 2.9 V/sub p-p/ at each output. The maximum slew rate of the output signal is 200 mV/ps. The power dissipation of the circuit is 1.6 W using a single supply voltage of -5 V.
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