A nested transimpedance amplifier circuit includes a first-order nested transimpedance amplifier having an input and an output. The first-order nested transimpedance amplifier is configured to be powered by a first voltage. A charge pump module is configured to receive the first voltage and a second...http://www.google.de/patents/US7808311?utm_source=gb-gplus-sharePatent US7808311 - Nested transimpedance amplifier
