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:
Jul. 23, 2002
Filed:
Mar. 21, 2001
Jae-Yoon Sim, Suwon, KR;
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
An input/output sense amplifier circuit of a semiconductor memory device is disclosed which comprises a current sense amplifier, a voltage sense amplifier and a latch circuit. The latch circuit includes a first differential amplifier for receiving the differential signals from the voltage sense amplifier; a second differential amplifier for receiving the differential signals from the voltage sense amplifier; and a gain varying circuit coupled between output terminals of the first and second differential amplifiers and setting a voltage gain of each of the first and second differential amplifiers that varies in response to the latch signal. By this configuration, a time normally required to be provided to the latch signal is obviated, thus reducing lead time of the memory device.