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:
Jul. 14, 1998
Filed:
Apr. 18, 1996
Hsueh-Wu Kao, Nan-Tou Hsien, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
The two-segment ladder circuit disclosed comprises a front-end resistor for reducing a reference voltage to an internal voltage, a resistor network for receiving the internal voltage and generating a plurality of branch currents having magnitude that form a decreasing geometrical series with a ratio of 1/2, and a resistor for terminating the resistor network. The terminating resistor and resistors of the resistor network can be diffused resistors or well resistors, which require less chip area. In addition, the front-end resistor can be a polysilicon resistor, which is capable of withstanding the high reference voltage and has less resistance variation according to the voltage across it. The two-segment ladder circuit can be used as a building block for a digital-to-analog converters.