METHODS AND APPARATUS TO REJECT CURRENT RIPPLE
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United States of America
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Issued Date -
Feb 13, 2025
app pub date -
Jan 31, 2024
filing date -
Jan 31, 2024
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Abstract
An example apparatus includes: a low-pass filter and a high-pass filter coupled to a first current terminal of the first transistor; an input of a first amplifier coupled to the output of the high-pass filter; an input of a negative gain amplifier coupled to an output of the first amplifier; inputs of an adder coupled to an output of the negative gain amplifier and an output of the low-pass filter; a first input of a second amplifier coupled to the output of the adder; a control terminal of a second transistor coupled to the output of the second amplifier, a second current terminal of the second transistor coupled to the first input of the second amplifier; and a control terminal of a third transistor coupled to the output of the second amplifier, a second current terminal of the third transistor coupled to an output terminal.
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