Abstract
In this paper, a transimpedance amplifier (TIA)-optical receiver (Rx) using two intersecting active feedback system with regulated-cascode input stage has been designed and fabricated for optical interconnects. The optical TIA-Rx chip is designed with 130 nm CMOS technology and operates up to 10 Gb/s data rate. The TIA-Rx chip core occupies an area of $$0.051\, \hbox {mm}^{2}$$0.051mm2 with power consumption of 16.9 mW at 1.3 V. The measured input-referred noise of optical TIA-Rx is $$20\hbox {pA}/\surd \hbox {Hz}$$20pA/?Hz with a 3-dB bandwidth of 6.9 GHz. The proposed TIA-Rx achieved a high gain-bandwidth product per DC power figure of merit of $$408 \,\hbox {GHz}\Omega /\hbox {mW}$$408GHzΩ/mW.
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