Control of bias current to a load

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11990910
APP PUB NO 20220345119A1
SERIAL NO

17729844

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A circuit portion comprises a load circuit portion and a bias circuit portion. The load circuit portion comprises a load transistor. The bias circuit portion comprises a replica transistor matched to the load transistor and connected to the load transistor at a node such that when a current flows through the replica transistor, a current proportional to the current through the replica transistor flows through the load transistor. The bias circuit portion also comprises a current input for receiving an input current, a supply voltage input for receiving a supply voltage, and a feedback loop arranged to: adjust a voltage at the node connecting the replica transistor and the load transistor such that the replica transistor conducts a current proportional to the input current, and counteract variations in the voltage at the node connecting the replica transistor and the load transistor arising from changes in the supply voltage.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
NORDIC SEMICONDUCTOR ASAOTTO NIELSENS VEG 12 TRONDHEIM 7004

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Garvik, Harald Trondheim, NO 6 2

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