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. 24, 2004
Filed:
May. 12, 2003
Applicant:
Inventor:
Marcus M. Martins, Richardson, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/66 ;
U.S. Cl.
CPC ...
H03M 1/66 ;
Abstract
A dual-stage DAC system is provided that includes a coarse resistor network having a first portion and a second portion that provide a plurality of segment voltages. The coarse resistor network is coupled to a fine resistor network that provides a plurality of tap output voltages corresponding to a selected segment voltage. The output of the fine resistor network can be provided to an amplifier that sets a reference voltage in addition to buffering the output of the fine resistor network. A predetermined current is coupled to one of the first portion and the second portion of the coarse resistor network based on the segment voltage selected.