ACTIVE CURRENT MODE SAMPLING CIRCUIT

摘要

The invention relates to an active current mode sampling circuit comprising an operational amplifier (103) and at least one switched capacitor (C2, C2a, C2b). In order to reduce the power consumption of such a circuit, first switching elements (S101a, S101b, S102a, S102b) switch the switched capacitor (C2, C2a, C2b) between an input and an output of the operational amplifier (103) during charging phases phi1. Further, second switching elements (S103a, S103b, S104a, S104b) connect the switched capacitor (C2, C2a, C2b) during discharging phases phi2 to a subsequent stage (104), in order to provide a charge of the switched capacitor (C2, C2a, C2b) to the subsequent stage (104). The invention relates equally to a device (107) comprising such a sampling circuit and to a method of operating such a sampling circuit.