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:
Aug. 09, 2005
Filed:
Jun. 20, 2002
Walter Paul Sjursen, Washington Crossing, PA (US);
Daramana G. Gata, Plano, TX (US);
John W. Fattaruso, Dallas, TX (US);
Walter Paul Sjursen, Washington Crossing, PA (US);
Daramana G. Gata, Plano, TX (US);
John W. Fattaruso, Dallas, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A low distortion compression amplifier comprising an amplifier circuit having an input and an output, wherein an input signal is received at the input and amplified in accordance with a gain to form an output signal at the output. The amplifier circuit further comprises a comparator circuit operable to receive the output signal and generate a first control signal in response thereto. A digital gain control circuit is coupled to the amplifier circuit, and is operable to generate a digital gain control signal based at least in part on the first control signal. The gain control signal is then employed to modulate the gain of the amplifier circuit in a digital fashion. The invention also comprises a method of digitally controlling a gain associated with an amplifier circuit. The method comprises comparing an output signal to a threshold and modulating the gain in a digital fashion, wherein the gain is modulated up in a plurality of rates or down in a plurality of rates in response to the comparison.