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http://dx.doi.org/10.5370/KIEE.2015.64.12.1737

A Multi-channel CMOS Feedforward Transimpedance Amplifier Array for LADAR Systems  

Kim, Seung-Hoon (Dept. of Electronic Eng., Ewha Womans Univerity)
Park, Sung Min (Dept. of Electronic Eng., Ewha Womans Univerity)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.64, no.12, 2015 , pp. 1737-1741 More about this Journal
Abstract
A multi-channel CMOS transimpedance amplifier(TIA) array is realized in a $0.18-{\mu}m$ CMOS technology for the applications of panoramic scan LADAR systems. Each channel consists of a PIN photodiode and a feed-forward TIA that exploits an inverter input stage followed by a feed-forward common-source amplifier so as to achieve lower noise and higher gain than a conventional voltage-mode inverter TIA. Measured results demonstrate that each channel achieves $76-dB{\Omega}$ transimpedance gain, 720-MHz bandwidth, and -20.5-dBm sensitivity for $10^{-9}$ BER. Also, a single channel dissipates the power dissipation of 30 mW from a single 1.8-V supply, and shows less than -33-dB crosstalk between adjacent channels.
Keywords
Array; CMOS; LADAR; PIN photodiode; TIA;
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