| 摘要 |
The invention relates to an active current mode sampling circuit comprising an operational amplifier ( 103 ) and at least one switched capacitor (C 2 , C 2 a, C 2 b). In order to reduce the power consumption of such a circuit, first switching elements (S 101 a, S 101 b, S 102 a, S 102 b) switch the switched capacitor (C 2 , C 2 a, C 2 b) between an input and an output of the operational amplifier ( 103 ) during charging phases phi 1 . Further, second switching elements (S 103 a, S 103 b, S 104 a, S 104 b) connect the switched capacitor (C 2 , C 2 a, C 2 b) during discharging phases phi 2 to a subsequent stage ( 104 ), in order to provide a charge of the switched capacitor (C 2 , C 2 a, C 2 b) 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.
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