发明授权
- 专利标题: ACTIVE CURRENT MODE SAMPLING CIRCUIT
- 专利标题(中): 活动功率模式取样
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申请号: EP03818777.9申请日: 2003-09-29
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公开(公告)号: EP1668647B1公开(公告)日: 2009-09-16
- 发明人: RUHA, Antti , TERVALUOTO, Jussi-Pekka , RUOTSALAINEN, Tarmo
- 申请人: Nokia Corporation
- 申请人地址: Keilalahdentie 4 02150 Espoo FI
- 专利权人: Nokia Corporation
- 当前专利权人: Nokia Corporation
- 当前专利权人地址: Keilalahdentie 4 02150 Espoo FI
- 代理机构: Cohausz & Florack
- 国际公布: WO2005031755 20050407
- 主分类号: G11C27/02
- IPC分类号: G11C27/02 ; H03H19/00
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.
公开/授权文献
- EP1668647A1 ACTIVE CURRENT MODE SAMPLING CIRCUIT 公开/授权日:2006-06-14
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