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.:

US 7705759 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 27, 2010

Filed:

Jul. 31, 2007
Applicant:

Volker Christ, Neuss, DE;

Inventor:

Volker Christ, Neuss, DE;

Assignee:

Infineon Technologies AG, Neubiberg, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/66 (2006.01);
U.S. Cl.
CPC ...
Abstract

Disclosed are techniques for generating a precisely controlled analog signal. In one described implementation, a semiconductor circuit is mounted on a circuit board having a power and a ground etching. The circuit has a power terminal coupled with the power etching and a ground terminal coupled with the ground etching. The circuit includes a trapezoid shaped resistive strip coupled with the power terminal and the ground terminal. Contacts are connected along one edge of the strip to provide outputs at various voltage levels. Switches having a common output are coupled with the contacts on the strip. A control circuit activates the switches so that the common output generates an analog signal.


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