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:
Jan. 07, 2020
Filed:
Nov. 28, 2018
Shanghai Huahong Grace Semiconductor Manufacturing Corporation, Shanghai, CN;
Weiran Kong, Shanghai, CN;
Bin Zhang, Shanghai, CN;
Abstract
An SAR ADC and a conversion method, which include an SAR control logic circuit configured to control A/D conversion by: 1) sampling analog input signal for first time; 2) subjecting the sampled signal to conversions; 3) sampling analog input signal for another time; 4) subjecting the sampled signal in step 3) to conversion including: i) determining whether the lowest M bits of previous N-bit digital output signal are 1's or 0's, if so, looping back to step 2), otherwise, proceeding to step ii); ii) performing conversions on lowest M bits of new N-bit digital output signal, directly taking N-th to (M+1)-th bits of previous N-bit digital output signal as N-th to (M+1)-th bits of new N-bit digital output signal, and repeating steps 3) and 4) until the analog input signal is fully sampled and converted. Required cycles can be reduced resulting in higher conversion rate and lower power consumption.