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. 31, 2018
Filed:
Sep. 09, 2016
Texas Instruments Incorporated, Dallas, TX (US);
Himanshu Aggrawal, Houston, TX (US);
Manar Ibrahim El-Chammas, Dallas, TX (US);
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Abstract
A track and hold circuit includes a primary sampling capacitor, a primary switching transistor, and a cancellation transistor. The primary switching transistor is configured to provide a track state that connects an input signal to the primary sampling capacitor and a hold state that isolates the input signal from the primary sampling capacitor. The cancellation transistor is coupled to the primary sampling capacitor. The cancellation transistor is configured to inject a charge onto the primary sampling capacitor that cancels a charge injected onto the primary sampling capacitor by the primary switching transistor while the primary switching transistor is in the hold state.