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A Dual-Channel CMOS Transimpedance Amplifier Array with Automatic Gain Control for Unmanned Vehicle LADARs
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 Title & Authors
A Dual-Channel CMOS Transimpedance Amplifier Array with Automatic Gain Control for Unmanned Vehicle LADARs
Hong, Chaerin; Park, Sung Min;
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 Abstract
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.
 Keywords
AGC;CMOS;Dynamic range;Feedforward;LADAR;TIA;
 Language
Korean
 Cited by
 References
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