METHODS AND APPARATUS TO REDUCE MISMATCHES BETWEEN DIFFERENTIAL PAIRS OF SIGNALS
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United States of America
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Issued Date -
Apr 10, 2025
app pub date -
Nov 30, 2023
filing date -
Nov 30, 2023
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Abstract
An example apparatus includes: voltage divider circuitry configured to determine a common mode voltage of a differential pair of signals having a first voltage and a second voltage; a first amplifier coupled to the voltage divider circuitry, the first amplifier configured to determine a difference between the common mode voltage and a reference common mode voltage; current compensation circuitry coupled to the first amplifier, the current compensation circuitry configured to generate a first current and a second current responsive to the difference between voltages; and a second amplifier coupled to the voltage divider circuitry and the current compensation circuitry, the second amplifier to compensate the first voltage with the first current and the second voltage with the second current.
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