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:
Jun. 29, 1993
Filed:
Sep. 06, 1991
Bang-Won Lee, Kwangmyeong, KR;
Kyoung-Un Hwang, Incheon, KR;
SamSung Electronics Co., Ltd., Suwon, KR;
Abstract
In an operational amplifier or a comparator, a slew rate speed-up circuit improving the slew rate, without added power consumption, is disclosed. In a preferred embodiment, an operational amplifier, having one differential amplifier and a first pull-up transistor 10 having a gate connected to an output terminal 23 of the differential amplifier, includes a first output terminal 25, a second pull-up transistor 9 having a gate connected to the output terminal 23 of the differential amplifier and having a channel connected between a power supply voltage terminal and the first output terminal, a second output terminal 26 connected to one end of the channel of the first pull-up transistor 10, a current regulating means 30, connected between the first output terminal and the second output terminal, having one common current path, one pull-up current path and one pull-down current path, a first pull-down transistor 11 having a channel connected between the second output terminal and a ground voltage terminal, and a second pull-down transistor 8 having a channel connected between the first output terminal and the ground voltage terminal.