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:
Jan. 07, 2003
Filed:
Aug. 31, 2000
Marcus Marchesi Martins, Richardson, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
The present invention provides a dual stage amplifier with a clamping circuit and a methodology, along with a clamping circuit for use with a dual stage amplifier, which eliminate or reduce the overcharging of a compensation capacitor in such a dual stage amplifier. The amplifier includes a first amplifier stage with a first input and a first output, a second amplifier stage having a second input operatively connected to the first output, and a second output. The amplifier further includes a compensation capacitor in electrical communication with the second input and the second output, and a clamping circuit in electrical communication with the second stage, which is adapted to prevent overcharging of the compensation capacitor. The clamping circuit may include a low vgs clamp, a high vgs clamp, and/or a combination low and high vgs clamp, wherein the low vgs clamp is adapted to bias the second input away from a negative supply, and the high vgs clamp is adapted to bias the second input away from a positive supply.