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:
Oct. 14, 2025
Filed:
Aug. 31, 2023
Texas Instruments Incorporated, Dallas, TX (US);
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Abstract
In described examples, an R2R digital-to-analog converter includes multiple arms and a voltage regulator. Respective arms include an arm switch with a p-channel MOSFET (PFET) switch and an n-channel MOSFET (NFET) switch. The voltage regulator includes a differential amplifier, a p-ladder that includes N cascade-coupled PFETS and has first and second ends, an n-ladder that includes y×N cascade-coupled NFETS and has first and second ends, a first resistor (resistance R), and a second resistor (resistance y×R). The first p-ladder end is coupled to a first terminal of the first resistor. The second terminal of the first resistor is coupled to an input of the differential amplifier and a first terminal of the second resistor. A second terminal of the second resistor is coupled to the first n-ladder end. An output of the differential amplifier is coupled to the second n-ladder end and provides a gate voltage of the NFET switch.