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. 18, 2000
Filed:
Nov. 24, 1998
Indumini W Ranmuthu, Plano, TX (US);
Glenn C Mayfield, Garland, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A method is disclosed for modifying the operational bandwidth of a signal amplification circuit, comprising the steps of providing an amplification circuit for amplifying the electrical signal, providing circuitry to selectably modify capacitive loading within the amplification circuit and coupled to the amplification circuit, and using the circuitry to selectively modify capacitive loading to alter a dominant pole of the amplification circuit, resulting in a modification of the operational bandwidth of the amplification circuit. A user switchable circuit 220 is coupled to an amplification portion (202, 204, 206, 208, 210, 216, 218) of the amplification circuitry such that a user may selectively activate or deactivate the switchable circuitry, effecting a corresponding and balanced increase or decrease of the capacitive loading within the amplification circuitry. The balanced nature of the capacitive loading changes, effected by the user switchable circuitry, provides the advantage of minimizing the effects of common mode noise and instability in the amplifier circuitry.