Abstract
In this letter, a broadband area-efficient transimpedance amplifier (TIA) for optical receivers is designed using a standard 0.18 μm CMOS technology. A new shunt---shunt peaking technique is used at the input transimpedance stage, which is followed by a gain stage and a capacitive degeneration stage. The amplifier achieves a wide bandwidth with only one inductor; hence a smaller silicon area is maintained. The proposed TIA has a measured transimpedance gain of 50 dB Ohm and a ?3 dB bandwidth of 6.5 GHz for 0.25 pF input photodiode capacitance. It consumes DC power of 14 mW from a 1.8 V supply voltage and occupies only 0.09 mm2 silicon area.
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