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:
Jun. 07, 2022
Filed:
Mar. 31, 2021
Silicon Laboratories Inc., Austin, TX (US);
Abdulkerim L Coban, Austin, TX (US);
Silicon Laboratories Inc., Austin, TX (US);
Abstract
A voltage reference circuit that can operate in a large supply voltage range with high PSRR, that dissipates low-power for a given output noise, and that has a low temperature-coefficient (TC) across a wide-temperature range. The voltage reference circuit does not require any calibration for low TC and high PSRR, occupies a relatively small circuit area, may be used without additional supply filtering in noisy or high-ripple supply environments, and is more robust against device mismatch effects particularly compared to designs based on sub-threshold operations. The voltage reference circuit is a special form of constant transconductance circuit that uses current mirror ratios that are chosen to achieve high PSSR and low noise properties. The device saturation voltage may be chosen so that flat temperature characteristics may be achieved.