| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a switched capacitor circuit which employs a single operational amplifier to implement both an integrator and a summer. <P>SOLUTION: One input signal is routed to the input of the operational amplifier through (1) one or more integrating branches, and (2) one or more first summing branches. A second input signal is routed to the input of the operational amplifier through one or more second summing branches. Each of the branches includes a capacitor, and also a number of switches controlled by different clock phases. The switched capacitor circuit may be single-ended or differential. <P>COPYRIGHT: (C)2012,JPO&INPIT |
