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:
May. 30, 2006
Filed:
Jun. 14, 2005
Applicants:
Hisashi Harada, Hyogo, JP;
Takahiro Miki, Hyogo, JP;
Hideo Matsui, Hyogo, JP;
Inventors:
Assignee:
Renesas Technology Corp., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
A successive approximation A/D converter includes first and second S/H and comparators sampling and holding first and second external analog input voltages simultaneously and comparing the held, first and second external analog input voltages with a reference voltage to output first and second signals having levels corresponding to resultant comparisons, and a reference voltage generator operative in response to the first and second signals to generate the reference voltage. The two S/H and comparators share the single reference voltage generator. A reduced chip area can be achieved.