A wide-dynamic-range and extremely high-sensitivity CMOS optical receiver IC using feed-forward auto-bias adjustment

This is the first report of a CMOS receiver IC that has high transimpedance gain of 150 dB/spl Omega/ and minimum detectable input current signal range from 0.05 /spl mu/A to 17 /spl mu/A with stable operation for FET's Vth and power supply voltage deviations. To implement wide dynamic range, a new multi-staged feed-forward auto-bias adjustment provides a wide dynamic range without any external elements and adjustments. Using this design technique, an optical receiver IC was fabricated by standard 0.8-/spl mu/m CMOS technology and it has a wide dynamic range of >25 dB for burst-mode optical input at 29 Mb/s.<
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