Transimpedance amplifier with automatic gain control for signal acquisition

Abstract

A device for signal acquisition, comprises a transimpedance amplifier having an input receiving a current from an input device, an output to supply an output voltage reflective of the current; and a memristor component connected in a feedback path of the transimpedance amplifier, the memristor component transitioning between a high resistive state and a low resistive state depending on a voltage difference across the memristor component. The gain of the transimpedance amplifier is reduced as the increase in current approaches a saturation level of the amplifier and triggers the transition. The result is an increase in dynamic range of the transimpedance amplifier to better match the range of current output that may be expected from say an optical input device.

Dependencies are inferred from the claim text.