Pulse width amplifier circuit

摘要

Disclosed herein is an ATD circuit of the present invention. In order to generate a stable ATD pulse, a pulse width amplifier circuit is provided between a first circuit means and a second circuit means. The first circuit means outputs a first output signal having a first pulse width in response to a change in external address signal and outputs, when the external address signal is brought to a first sawtooth signal, a second sawtooth output signal having a peak value smaller than that of the first sawtooth signal. The second circuit means inputs therein the signal outputted from the pulse width amplifier circuit and waveform-shapes the output signal so as to output an ATD signal therefrom. The pulse width amplifier circuit amplifies a pulse width of the signal outputted from the first circuit means. Further, the pulse width amplifier circuit outputs a third output signal having a second pulse width corresponding to the first pulse width when the first output signal is input thereto and outputs a fourth output signal having a third pulse width when the second output signal is input thereto.