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:
Dec. 02, 2025
Filed:
Feb. 16, 2024
Apple Inc., Cupertino, CA (US);
Utkarsh Sharma, Los Angeles, CA (US);
Gokce Gurun, San Jose, CA (US);
Sanjeev K. Maheshwari, Fremont, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
An ADC with non-uniform quantization is disclosed. A SAR ADC includes a comparator configured to generate, during successive clock cycles, respective comparison signals based on an analog input signal and a corresponding offset voltage. The SAR ADC further includes a digital logic circuit configured to store values of the respective comparison signals for corresponding ones of the successive clock cycles and further configured to output a digital value after a specified number of successive clock cycles. An offset control circuit is configured to, for a current one of the successive clock cycles, generate the corresponding value of the offset voltage based on one or more of values of the respective comparison signals from previous clock cycles. Respective offset voltages for successive clock cycles are spaced such that the SAR ADC implements non-uniform quantization values.