A transimpedance amplifier has an amplifier unit, a feedback resistor arranged between the output and input ends of the amplifier unit, a voltage clamp unit connected to the opposite ends of the feedback resistor, to clamp a voltage applied to the ends of the feedback resistor and prevent the amplifier...http://www.google.de/patents/US5606282?utm_source=gb-gplus-sharePatent US5606282 - Transimpedance amplifier
