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:
Nov. 28, 2017
Filed:
Jun. 20, 2016
Exar Corporation, Fremont, CA (US);
Steven Smith, Lovell, ME (US);
Dale Wedel, Fremont, CA (US);
Exar Corporation, San Jose, CA (US);
Abstract
A highly integrated programmable sensor interface with improved sensor signal calibration and conditioning functions is described. The programmable sensor interface according to the present invention sensor interface provides programmable gain, digital offset correction and bias for one or more signal channels on one chip on a per channel basis. According to another aspect of the invention, the sensor interface provides reference voltage and sensor biasing by using an on-chip precision voltage regulator. According to one aspect of the invention, multiple inputs are multiplexed and each is applied to a variable gain instrumentation amplifier, which connects to the output. The offset of a given channel is controlled by an on-chip DAC which has multiple digital storage registers, allowing each channel to have a unique, stored offset. Offsets and gains are programmed externally.