An inductorless transimpedance amplifier design for 10 Gb/s optical communication using 0.18-µm CMOS

This paper presents a novel inductorless transimpedance amplifier (TIA) design using Global Foundaries 0.18-µm CMOS technology suitable for high speed optical communication. A modified-RGC preamplifier stage (M-RGC) is used to lower input impedance through cascode and parallel PMOS transistor techniques for wideband operation. The amplifier stage used common source amplifiers to increase the gain and the third-order interleaving feedback technique to increase the bandwidth. The proposed TIA has a transimpedance gain of 59.5 dBΩ with bandwidth of 6.16 GHz and a power consumption of 21.2 mW (core power = 17.5 mW) for VDD = 1.8 V.

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