Amplifier circuit, corresponding device and method

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12267047
APP PUB NO 20220337198A1
SERIAL NO

17720502

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Abstract

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An amplifier circuit includes a first input stage with a differential input transistor pair and a second gain stage having an output node coupled to a load. A node in the first gain stage is coupled to the output node in the second gain stage. A feedback line couples the output node to the control node of a first transistor of the differential input transistor pair. Current mirror circuitry is coupled to a current flow path through a further transistor in the second gain stage and includes a sensing node configured to produce a sensing signal indicative of the current supplied to the load. The sensing signal at the sensing node is directly fed back to the control node of the first transistor of the differential input transistor pair to provide a zero in the loop transfer function that is matched to and tracks and cancels out a load-dependent pole.

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Patent Owner(s)

Patent OwnerAddress
STMICROELECTRONICS S R LITALY BRIANZA MONZA MONZA AND BRIANZA

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bertolini, Alessandro Vermiglio, IT 23 25
Nicollini, Germano Piacenza, IT 104 1291

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