PROGRAMMABLE GAIN AMPLIFIER AND A DELTA SIGMA ANALOG-TO-DIGITAL CONVERTER CONTAINING THE PGA
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United States of America Patent
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Issued Date -
Mar 27, 2025
app pub date -
Dec 9, 2024
filing date -
Dec 9, 2024
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Abstract
A circuit includes an operational amplifier and a resistor network coupled to an output of the operational amplifier. The resistor network includes a first set of resistors coupled between the output of the operational amplifier and a first node of the resistor network, wherein the resistors of the first set are electrically connected in series with each other, a second set of resistors coupled between the first node and a second node of the resistor network, wherein the resistors of the second set are electrically connected in series with each other and include a first number of resistors, a third set of resistors coupled between the second node and a third node of the resistor network, wherein the third node is coupled to a first voltage, and wherein the resistors of the third set are electrically connected in parallel with each other and include a second number of resistors, and a resistor coupled between the first node and the second node and arranged in parallel with the second set of resistors.
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