A transimpedance amplifier system includes a first gain stage to receive an input signal. A second gain stage is coupled to the first gain stage to provide a first output. A first passive feedback element is coupled in parallel with the second gain stage. A general feedback element is coupled in parallel...http://www.google.de/patents/US6593810?utm_source=gb-gplus-sharePatent US6593810 - 2.5 Gigabits-per-second transimpedance amplifier