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. 05, 2013
Filed:
Jun. 29, 2010
Ming-chieh Huang, San Jose, CA (US);
Tien-chun Yang, San Jose, CA (US);
Steven Swei, Fremont, CA (US);
Ming-Chieh Huang, San Jose, CA (US);
Tien-Chun Yang, San Jose, CA (US);
Steven Swei, Fremont, CA (US);
Abstract
A voltage reference circuit with temperature compensation includes a power supply, a reference voltage supply, a first PMOS transistor with its source connected to the power supply voltage, a second PMOS transistor with its source connected to the power supply and its gate and drain connected to the first PMOS gate, a first NMOS transistor with its gate and drain connected the first PMOS drain, a second NMOS transistor with its drain connected to the second PMOS drain and its gate connected with the first NMOS gate to the reference voltage supply, a resistor connected to the second NMOS source and ground, and an op-amp with its inverting input and its output connected the first NMOS source and its non-inverting input connected to the ground. In another aspect, a voltage reference circuit output is coupled to an NMOS gate in saturation mode connected to another voltage reference circuit.