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. 06, 2000
Filed:
Nov. 04, 1998
Nippon Precision Circuits, Inc., Tokyo, JP;
Abstract
The drains of P- and N-channel MOS transistors 1 and 2 are connected to each other. An output terminal is formed at the node of the drains. Each of first and second amplifier stages 4 and 5 is configured by cascading an n number of CMOS inverters. The amplifier stages drive first and second last-stage CMOS inverters 6 and 7 to drive the P- and N-channel MOS transistors 1 and 2, respectively. A dummy CMOS inverter 8 is disposed so that the input is connected to the node of the second amplifier stage 5 and the second last-stage CMOS inverter 7. The load of the second amplifier stage 5 is equal to that of the first amplifier stage 4. The drivabilities of the CMOS inverters of the same stage in the first and second amplifier stages 4 and 5 are made equal to each other. According to this configuration, the number of CMOS inverters which must be checked in a process of adjusting the duty can be reduced.