Publisher : The Korean Institute of Electrical Engineers
DOI : 10.5370/KIEE.2016.65.5.831
Title & Authors
A Dual-Channel CMOS Transimpedance Amplifier Array with Automatic Gain Control for Unmanned Vehicle LADARs Hong, Chaerin; Park, Sung Min;
In this paper, a dual-channel feed-forward transimpedance(TIA) array is realized in a standard 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 , input dynamic range of 1:100, the bandwidth of , the equivalent input referred noise current spectral density of 6.9 pA/HZ, the maximum sensitivity of -26.8 dBm for , and the power consumption of 27.6 mW from a single 1.8-V supply. The dual-channel chip occupies the area of including I/O pads.
S. Kim et al., "Four-Channel Differential CMOS Optical Transimpedance Amplifier Arrays for Panoramic Scan LADAR Systems", J. of IEEK, Vol. 51, No. 9, pp. 82-90, Sep. 2014.
S. Kim, S. Cho, and S. M. Park, "A dual-mode CMOS feed-forward transimpedance amplifier for LADARs", IET Electronics Letters, Vol. 50, No. 23, pp.1678-1680, Nov. 2014.
S. H. Kim, and S. M. Park, "A Multi-channel CMOS Feedforward Transimpedance Amplifier Array for LADAR Systems", Trans. of the Korean Institute of Electrical Engineers, Vol. 64, No. 12, pp. 1737-1741, Dec. 2015.
S. M. Park, "A 16-channel CMOS Inverter Transimpedance Amplifier Array for 3-D Image Processing of Unamnned Vehicles", Trans. of the Korean Institute of Electrical Engineers, Vol. 64, No. 12, pp. 1730-1736, Dec. 2015.