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:
Jul. 28, 2009
Filed:
Dec. 23, 2005
Narasimhan R. Trichy, Dallas, TX (US);
Wayne Tien-feng Chen, Plano, TX (US);
Narasimhan R. Trichy, Dallas, TX (US);
Wayne Tien-Feng Chen, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A CAN receiver architecture design that provides better immunity against EMI interference than conventional designs is disclosed herein. This CAN receiver includes a voltage divider network connected to a front-end amplifier for dividing down the input signal from a two wire line by a predetermined amount and amplifying the signal by the same predetermined amount. The front-end amplifier generates the common-mode voltage of the input signal for a reference generator that determines the logic level of the incoming signal and subtracts a bandgap voltage reference from the common-mode voltage. A comparator compares the difference between the output of the front-end amplifier and the resultant signal generated by the reference generator to generate an output signal for the receiver. This CAN receiver architecture is faster than conventional designs and possesses an improved common-mode rejection, while operating over a wide input common mode range.