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:
Sep. 22, 1992
Filed:
May. 03, 1991
Royal A Gosser, Reidsville, NC (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A transconductance generator including a cross-coupled quad circuit having first and second pairs of complementary transistors, wherein one of the first pair is in series with a complementary one of the second pair, and the other two transistors also are in series. Two input terminals are provided, one for each pair of cross-quad transistors. Two current mirrors are provided, one being coupled to a set of two NPN cross-quad transistors, and the other coupled to the two PNP cross-quad transistors. The cross-quad circuit and the current mirrors provide an output signal through a pair of output transistors. By connecting the output signal to the second input terminal, negative feedback is developed to provide a unity-gain buffer. A number of special compensating circuits are provided to assure minimum distortion effects in the output signal.