A driver IC and a 2:1 selector-driver IC developed for lightwave modulators are presented. The IC's were fabricated in a standard InP/InGaAs double heterojunction bipolar transistor technology with 56 GHz F/sub t/ and 43 GHz F/sub max/. The driver operates up to 20 Gb/s with an output voltage swing of 4 V/sub pp/ (corresponding to an internal current swing of 120 mA). The 2:1 selector-driver exhibits an output voltage swing of 2.2 V/sub pp/ at 30 Gb/s. Specific design and layout aspects of such circuits are discussed.
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Meghelli et al. (1998) studied this question.
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