WPAT, P.C.
Circuit and method for providing a corrected duty cycle
A duty cycle correction circuit comprises a duty cycle detector, a filter, an amplifier, a charge pump, a control circuit, and a duty cycle corrector. The duty cycle detector is configured to generate a first pair of control signals according to a pair of internal clock signals. The filter is configured to obtain average voltages of the first pair of control signals. The amplifier is configured to compare output voltages of the filter for generating an enable signal, and the control circuit is configured to generate a selection signal according to the enable signal. The charge pump is configured to generate a second pair of control signals according to the enable signal and the selection signal, and the duty cycle corrector is configured to receive a pair of external clock signals, the first pair of control signals, and the second pair of control signals for generating the pair of internal clock signals with a corrected duty cycle.
Elite Semiconductor Memory Technology Inc.
H
H03K
inventional
Chien Yi Ming Chien
Chang Huang