National Sun Yat-Sen University of Kaohsiung

Deng-Shian Wang

Chua-Chin Wang

Hao-Chun Huang

Yu-Ting Tu

A peak detector utilizes two choppers to cancel offset voltage of a transconductance amplifier, so the influence of the offset voltage is preventable and the peak detection accuracy of the peak detector can be improved significantly.

Peak detector and operational amplifier circuit therein

A phase shift detector comprises a comparator for detecting phase information of a signal and an offset calibration circuit. In order to prevent input offset voltage of the comparator from affecting phase detection accuracy, bulk voltage is inputted to the comparator from the offset calibration circuit to adjust threshold voltage of transistor in the comparator for compensating input offset voltage of the comparator and improving accuracy of the phase shift detector.

Growing community of inventors

Kaohsiung, Taiwan

Deng-Shian Wang