| 摘要 |
PURPOSE:To extend the dynamic range, by connecting a transversal filter provided with a storage section in addition to charge/discharge sections in parallel between the input and output, in the transversal filter using a switching capacitor. CONSTITUTION:A capacitor C0 repeats charge/discharge at 1/2T respectively and capacitors C1, C2 have the same capacitance with each other and take one period (in total 2T) with 1/2T of charge, T of storage and 1/2T of output. The capacitors C0, C1 are connected to the input at the 1st 1/2T, the capacitors C0, C2 are connected to the output at the next 1/2T, the capacitor C1 is to the neutral, the capacitors C0, C1 are connected to the output at the next 1/2T, and the capacitor C2 is to the neutral position, then the output V in this state is (C1V1+C0V2)/(C0+C1), where V1 is input voltage at 0-1/2T and V2 is input voltage at 1-3/2T. |
