Linear transimpedance amplifier dual regulator architecture and tuning
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United States of America Patent
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Feb 15, 2022
Grant Date -
Sep 9, 2021
app pub date -
Mar 4, 2020
filing date -
Mar 4, 2020
priority date (Note) -
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Abstract
A system includes a transimpedance amplifier, disposed on a chip, having a front-end section and a back-end section; an on-chip linear regulator, on the chip, arranged to power the front-end section; and an off-chip switching regulator, off the chip, arranged to power the back-end section. The arrangement provides low noise power supply for the front-end section, while providing a more power efficient switching regulator to power the back-end section. The output voltage of the on-chip linear regulator and the output voltage of the off-chip switching regulator are controlled to be the same.
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