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:
May. 17, 2016
Filed:
Dec. 25, 2014
Applicant:
Texas Instruments Incorporated, Dallas, TX (US);
Inventors:
Jiyuan Luan, Fremont, CA (US);
Michael J. DiVita, Morgan Hill, CA (US);
Assignee:
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K 3/0231 (2006.01); H03K 4/50 (2006.01); H03K 5/003 (2006.01); H03K 3/011 (2006.01);
U.S. Cl.
CPC ...
H03K 4/50 (2013.01); H03K 3/011 (2013.01); H03K 3/0231 (2013.01); H03K 5/003 (2013.01);
Abstract
Relaxation oscillator circuitry is presented with low drift and native offset cancellation, including an amplifier amplifying a first current signal to provide a pulse amplifier output waveform, an integrator integrating a second current signal to provide a ramp output waveform, and a comparator comparing the integrator output waveform with a threshold set by the amplifier output waveform to generate an alternating oscillator output used to switch the polarities of the first and second current signals.