Abstract

This paper presents a novel symmetric current-conveyor transimpedance amplifier (SCC-TIA) implemented in a 0.13-μm CMOS technology for the applications of LiDAR systems, where a modifiedcascode configuration is newly proposed for input current buffer to deliver the photo-currents to the following voltage-mode inverter TIA without signal loss. Measured results of the proposed SCC-TIA demonstrate 69-dBΩ transimpedance gain, 410-MHz bandwidth, 13-pA/sqrt (Hz) average noise current spectral density, and 20-mW power dissipation from a single 1.2-V supply. Chip core occupies the area of 280×130 μm².

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