| 摘要 |
PURPOSE:To prevent the change of the position of level 0 to fix the amplitude even at the time of the quick change of the amplitude of an input digital signal with respect to the amplifier which amplifies a burst signal, whose amplitude is quickly changed, to a certain amplitude. CONSTITUTION:Output signals of a signal output terminal and an inverted output terminal of an amplitude limiting amplifier 1 which has a signal input terminal and an inverted input terminal on the input side and has a signal output terminal and the inverted output terminal on the output side and amplifies a digital signal are inputted to a first comparator 2, and the differential voltage output has a peak rectified by a peak rectifying circuit 3 and is inputted to a second comparator 4 which compares it with a reference voltage of level 0, and the output is inputted to the relevant inverted input terminal. |
