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:
Mar. 14, 2000
Filed:
Oct. 23, 1998
Applicant:
Inventor:
Hirokazu Yoshizawa, Tokyo, JP;
Assignee:
Seiko Instruments Inc., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330-9 ; 330107 ;
Abstract
A switched-capacitor amplifier circuit produces accurate output signal even if the input signal varies rapidly at every sampling phase. Two capacitors having the same capacitance are connected, in series with the input of an operational amplifier circuit. A switching circuit is connected between a first terminal and ground terminal. The two capacitors are connected with the first terminal.