Level shift circuit for differential signals
CA 1252523 A · Owner: Tektronix, Inc. · Inventors: Diller, Calvin D.; Gladden, Donald D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A level shift circuit for shifting the common mode level of the output signal provided by a differential amplifier has first and second input terminals for receiving the output signal from the differential amplifier, which has a Thevenin source impedance Rs and also has first and second output terminals that are connected to a reference voltage level through a load impedance R0. The circuit comprises a differential transconductance amplifier having two output terminals that are connected respectively to the first and second output terminals of the circuit. The amplifier has the property that it responds to an input voltage Ee between its input terminals by providing a current equal to …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted April 11, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 11, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.