| 摘要 |
PURPOSE:To realize the semiconductor integrated circuit with high noise proofing property. CONSTITUTION:A noise prevention circuit 2 comprising an analog integration circuit A comprising an operational amplifier 3, a resistor 4 and a capacitor 7 and an integration operation limit circuit B comprising a resistor 8 connected in parallel with the capacitor 7 is connected to an input stage of a logic circuit comprising plural logic elements to operate the logic circuit without being affected by noise. |
