Duty cycle correction circuit for use in a semiconductor device

Details Duty cycle correction circuit for use in a semiconductor device Duty cycle correction circuit for use in a semiconductor device

2007-04-03

2007-04-03

Nguyen, Linh My (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

C327S175000

Reexamination Certificate

active

11147629

ABSTRACT:
A duty cycle correction circuit for use in a semiconductor device, which synchronizes with an external clock and corrects a duty cycle, is provided. The duty cycle correction circuit includes a modulator of an inverter structure having at least one or more transistors. The modulator receives a control signal through a source terminal and a bulk of any one of the transistors and corrects a duty cycle in response to an external clock signal. The duty cycle correction circuit also includes a driver that converts an output signal of the modulator into a full swing level and outputs the converted output signal of the modulator, and a feedback loop that generates the control signal in response to an output signal of the driver.

REFERENCES:
patent: 5477180 (1995-12-01), Chen
patent: 6320438 (2001-11-01), Arcus
patent: 6680637 (2004-01-01), Seo
patent: 2002/0079939 (2002-06-01), Nair et al.

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