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http://dx.doi.org/10.5370/KIEE.2016.65.5.831

A Dual-Channel CMOS Transimpedance Amplifier Array with Automatic Gain Control for Unmanned Vehicle LADARs  

Hong, Chaerin (Dept. of Electronics Engineering, Ewha Womans University)
Park, Sung Min (Dept. of Electronics Engineering, Ewha Womans University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.65, no.5, 2016 , pp. 831-835 More about this Journal
Abstract
In this paper, a dual-channel feed-forward transimpedance(TIA) array is realized in a standard $0.18-{\mu}m$ CMOS technology which exploits automatic gain control function to provide 40-dB input dynamic range for either detecting targets nearby or sensing imminent danger situations. Compared to the previously reported conventional feed-forward TIA, the proposed automatic-gain-control feed-forward TIA(AFF-TIA) extends the input dynamic range 25 dB wider by employing a 4-level automatic gain control circuit. Measured results demonstrate the linearly varying transimpedance gain of 47 to $72dB{\Omega}$, input dynamic range of 1:100, the bandwidth of $${\geq_-}670MHz$$, the equivalent input referred noise current spectral density of 6.9 pA/${\surd}$HZ, the maximum sensitivity of -26.8 dBm for $10^{-12}BER$, and the power consumption of 27.6 mW from a single 1.8-V supply. The dual-channel chip occupies the area of $1.0{\times}0.73mm^2$ including I/O pads.
Keywords
AGC; CMOS; Dynamic range; Feedforward; LADAR; TIA;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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