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:
Oct. 31, 1995
Filed:
Jul. 29, 1994
Pieter Vorenkamp, Eindhoven, NL;
Johannes P Verdaasdonk, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A differential voltage-current converter has two input transistors and two cross-coupled transistors arranged in a translinear loop, the difference voltage across the emitter resistors of the cross-coupled transistors being equal to the difference voltage across the input terminals. The difference current through the cross-coupled transistors is replicated in the output transistors, thereby enabling a larger output signal amplitude to be obtained. In order to increase the permissible input voltage the bases of the cross-coupled transistors are coupled to the input transistors via emitter-followers. By connecting the collectors of the emitter-followers to the collectors of the output transistors a compensation is obtained for the decreasing current gain at high frequencies.