| 摘要 |
PURPOSE:To obtain the A/D conversion system in which the reduction in a high frequency response of an output is compensated. CONSTITUTION:An analog signal passing through a low pass analog filter 1 whose cut-off frequency is set almost to the Nyquist frequency and a high frequency peaking analog filter 2 having a peaking characteristic emphasizing a high frequency component within the band of the low pass analog filter 1 is ADD-converted with a 10-bit A/D converter 3 in the oversampling system. An output of the A/D conversion is fed to a digital filter 4. |
