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:
Sep. 19, 2000
Filed:
Apr. 15, 1999
Ramin Khoini-Poorfard, Allentown, PA (US);
Lysander B Lim, Emmaus, PA (US);
Lucent Technologies, Inc., Murray Hill, NJ (US);
Abstract
A mixed signal integrated circuit board having decreased sensitivity of analog circuitry to digital circuitry noise is disclosed. In the mixed-signal integrated board of the present invention, a new (second) analog ground is created. This new analog ground is not limited by the manufacturing specification of connectivity to the substrate of the circuit board and is thereby free of transient noise generated by digital components on the board. In a mixed-signal integrated circuit board of the present invention, the new analog ground becomes the preferred ground and is utilized in many sensitive analog applications including voltage and current measurements. The new analog ground is easy to create as it does not involved complicated circuitry. The new analog ground may be created even after the initial circuit schematics has been created.