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:
Dec. 08, 2015
Filed:
Jul. 30, 2014
Ipgoal Microelectronics (Sichuan) Co., Ltd., Chengdu, CN;
Baoding Yang, Chengdu, CN;
Zhengxian Zou, Chengdu, CN;
IPGoal Microelectronics (Sichuan) Co., Ltd., Chengdu, CN;
Abstract
A quick comparison circuit includes a cascaded N-stage operational amplifier, a flip-latch, a biasing circuit, and a control signal generating circuit, with N≧2, and two differential signals to be compared being inputted to an input terminal of a first stage operational amplifier, an output terminal of a Nth stage operational amplifier being connected with an input terminal of the flip-latch, the biasing circuit supplying a biasing current to each stage operational amplifier, the control signal generating circuit being connected with the N-stage operational amplifier and the flip-latch respectively to supply a working time sequence and a reset control signal for them, and each stage operational amplifier having the same structure. This circuit has high gain and improved comparison speed.