FILTER ADJUSTING METHOD, FILTER ADJUSTING DEVICE, AND FILTER CIRCUIT

摘要

It is possible to provide a filter adjusting method, a filter adjusting device, and a filter circuit for adjusting the characteristic of an analog filter by using a simple configuration. The filter adjusting method for adjusting the characteristic of an analog filter (111) includes a step of supplying a pseudo random code to the analog filter (111), a step of calculating a mutual correlation value between the output of the analog filter (111) and the pseudo random code, and a step of adjusting the characteristic of the analog filter according to the calculated mutual correlation value.