| 摘要 |
PROBLEM TO BE SOLVED: To provide an input buffer circuit capable of saving a power, and reducing the fluctuation of an output signal due to the fluctuation of the DC components and amplitude of an input signal. SOLUTION: A connecting circuit 30 is connected between a differential amplifier circuit 50 and an inverter 2. The connecting circuit 30 supplies a reference potential equal to the logical threshold of the inverter 2 to an output node A3. Even when the DC components and amplitude of an output signal Vout outputted from a differential amplifier circuit 50 fluctuate due to the fluctuation of the DC components and amplitude of an input signal Vin, the DC components and amplitude are made close to a reference potential to be generated in a node A3 by the connecting circuit 30, and outputted.
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