| 摘要 |
PROBLEM TO BE SOLVED: To provide an operational amplification circuit that is tolerant of a fluctuation in clock phase difference.SOLUTION: A FIR filter can be used for adding an input signal of the FIR filter and a signal that is a delayed version of the input signal of the FIR filter to remove chopping noise. This is tolerant of a fluctuation in clock phase difference regardless of a phase difference between clocks for controlling a chopping circuit and the FIR filter. |
