Duty cycle correction circuit and semiconductor integrated...

Details Duty cycle correction circuit and semiconductor integrated... Duty cycle correction circuit and semiconductor integrated...

2011-01-04

2011-01-04

Luu, An T (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

C327S158000, C327S291000, C327S299000

Reexamination Certificate

active

07863957

ABSTRACT:
A duty cycle correction circuit includes a phase splitter configured to control a phase of a DLL clock signal to generate a rising clock signal and a falling clock signal, a clock delay unit configured to delay the rising clock signal and the falling clock signal in response to control signals to generate a delayed rising clock signal and a delayed falling clock signal, a duty ratio correction unit configured to generate a correction rising clock signal and a correction falling clock signal that toggle in response to an edge timing of the delayed rising clock signal and the delayed falling clock signal, and a delay control unit configured to detect duty cycles of the correction rising clock signal and the correction falling clock signal to generate the control signals.

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