Montage Technology (kunshan) Co., Ltd.

Jinfu Chen

Lixin Jiang

Liang Zhang

Wenlin Xu

Bo Qu

Kang Wei

A duty cycle calibration circuit includes delay, temperature compensation, differential, and phase adjustment units. The delay adjustment unit receives a single-ended input clock signal to be calibrated and an adjustment voltage and outputs a single-ended clock signal adjusted by the adjustment voltage. The temperature compensation adjustment unit determines the adjustment voltage output by the temperature compensation adjustment unit, and provides the adjustment voltage to the delay adjustment unit to eliminate the influence of the temperature on the duty cycle. The differential adjustment unit converts the single-ended clock signal into a differential clock signal, and adjusts delay of the differential clock signal. The phase adjustment unit receives the adjusted differential clock signal to adjust its phase and converts it into a single-ended output clock signal after phase adjustment, and makes rising and falling edges of the single-ended output clock signal correspond to rising edges of the adjusted differential clock signal respectively.

Duty cycle calibration circuit and method

A delay device and a delay control method are provided. The delay device includes at least one current-controlled delay group and at least one switch. The at least one current-controlled delay group is coupled to a transmission wire, each of the at least one current-controlled delay group includes at least one current-controlled delayer, and each of the at least one current-controlled delayer provides a delay according to a control voltage. The at least one switch is coupled between the at least one current-controlled delay group and the transmission wire, and each of the at least one switch is turned on or off according to a bit of an enable signal applied thereto. In the disclosure, the generated delay can be dynamically adjusted and cannot be affected by parasitic capacitance.

Growing community of inventors

Suzhou, China

Jinfu Chen