The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 13, 2018
Filed:
Apr. 17, 2014
China Electronic Technology Corporation, 24th Research Institute, Chongqing, CN;
Rong-Bin Hu, Chongqing, CN;
Guang-Bing Chen, Chongqing, CN;
Gang-Yi Hu, Chongqing, CN;
Yong-Lu Wang, Chongqing, CN;
Zheng-Ping Zhang, Chongqing, CN;
Can Zhu, Chongqing, CN;
Rong-Ke Ye, Chongqing, CN;
Lei Zhang, Chongqing, CN;
Yu-Han Gao, Chongqing, CN;
CHINA ELECTRONIC TECHNOLOGY CORPORATION, 24TH RESEARCH INSTITUTE, Chongqing, CN;
Abstract
A track and hold circuit comprises an input buffer amplifier, a unit gain amplifier module, a sampling switch, a drive triode and a sampling capacitor. The input buffer amplifier receives an input signal. In a track phase, the sampling switch is electrically connected to an emitter electrode of the drive triode; the input signal charges the sampling capacitor after being buffered by the input buffer amplifier, amplified without distortion by the unit gain amplifier module and driven by the drive triode. In a hold phase, the sampling switch is electrically connected to a base electrode of the drive triode; the base voltage of the drive triode is pulled down until the drive triode is cut off; electrical charges on the sampling capacitor are thereby held, causing the signal to be held on the sampling capacitor.