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:
Aug. 17, 2004
Filed:
Dec. 23, 2002
Applicant:
Inventor:
Wee Liang Lien, Singapore, SG;
Assignee:
Institute of Microelectronics, Singapore, SG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/76 ;
U.S. Cl.
CPC ...
H03M 1/76 ;
Abstract
Resistor string DAC's are known to utilize lots of area and slow in data conversion due to the large utilization of switches. The problem becomes worse when differential outputs are required in the conversion process. This invention describes a N-bit DAC architecture utilizing a substantially lower number of switches through a unique placement of tap-points in the resistor string and decode logic. Differential outputs share the same set of switches through 2 levels of decoding.