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:
May. 19, 2026
Filed:
Jun. 26, 2024
Stmicroelectronics International N.v., Geneva, CH;
Ranieri Guerra, S. Giovanni la Punta, IT;
Angela Bruno, Catania, IT;
STMicroelectronics International N.V., Geneva, CH;
Abstract
According to an embodiment, a differential current digital-to-analog converter (IDAC) proposed. The differential IDAC includes first and second reference resistors respectively coupled to a voltage supply rail and reference ground. A reference current source is positioned between the two reference resistors. The converter also features first and second variable resistors, both coupled to the voltage supply rail, with resistance values based on respective digital codes. Additionally, a p-channel transistor sources a first output current from the first variable resistor to a first output terminal, while an n-channel transistor sources a second output current from the second variable resistor to a second output terminal. The system includes amplifiers to ensure voltage equality across both pairs of reference and variable resistors, thereby stabilizing the output currents.