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:
Feb. 17, 1998
Filed:
Dec. 29, 1995
Rolf Bohme, Bad Friedrichshall, DE;
TEMIC TELEFUNKEN microelectronic GmbH, Heilbronn, DE;
Abstract
A folding amplifier is proposed for the construction of an A/D converter to which a current signal is fed as the input signal and from which a current difference signal is derived using a reference current. This current difference signal is fed to a first current-controlled current source, which is designed as a current mirror, and also to a second current-controlled current source, whereby the first current source takes over this current when the current difference signal has a positive sign and if the current difference signal has a negative sign the second current source takes over this current. The outputs of the first and second current-controlled current sources are fed to the output of the folding amplifier. Preferably, this folding amplifier is provided with a third current-controlled current source with sign reversal whose input is connected to the outputs of the first and second current sources and whose output is a V-shaped output current signal.