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. 01, 1992
Filed:
Oct. 01, 1991
Applicant:
Inventor:
Mehrdad Negahban-Hagh, Irvine, CA (US);
Assignee:
Silicon Systems, Inc., Tustin, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06G / ; H03K / ; H03F / ;
U.S. Cl.
CPC ...
307491 ; 307494 ; 307520 ; 328127 ; 328165 ; 328167 ; 330-9 ;
Abstract
A balanced modulator for use with auto-zero networks is described. The present invention is a switched capacitor balanced modulator suitable for use in auto-zero networks where a valid input signal is available only at one phase. The present invention changes the polarity of the input signal by adjusting a switched feedback capacitor, making it possible for the switched input capacitor to sample only at one (valid) phase. The balanced modulator of the present invention may be utilized with first order auto-zero low pass filters or other switched capacitor blocks, such as gain blocks, first order high pass filters, etc.