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:
Jun. 25, 2019
Filed:
Dec. 20, 2017
Texas Instruments Incorporated, Dallas, TX (US);
Martijn Fridus Snoeij, Erding, DE;
Sudarshan Udayashankar, Marzling, DE;
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Abstract
An input stage of an operational amplifier receives first and second input voltages. An output slew detection circuit decreases a first current responsive to slewing of an output of the operational amplifier and increases the first current responsive to no slewing. A slew boost and differential input voltage detection generates a second current at a first level when the first and second input voltages are approximately equal and to generate the second current at a second level, smaller than the first level, responsive to the first and second input voltages not being approximately equal. A voltage on a capacitor increases responsive to the first current from the output slew detection circuit increasing and responsive to the second current being at the second level. A current mirror is activated responsive to the voltage on the capacitor exceeding a second threshold. The current mirror decreases a third current of the input stage.