Voltage offset compensation circuit
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United States of America Patent
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Sep 22, 1998
Grant Date -
N/A
app pub date -
Feb 21, 1996
filing date -
Feb 21, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A voltage offset compensation circuit for a high gain amplifier having a fixed input voltage offset, includes sample and hold circuitry for periodically sampling the offset voltage and gain error voltage of the amplifier, and holding the sampled voltage; storage circuitry, operable between sampling periods, to store the sampled and held voltage; and further circuitry, operable during the sampling periods, to continuously maintain the output of the high gain amplifier at a value that is gain error and voltage offset compensated. The voltage offset compensation circuit may be used in sampled-data circuits, or continuous-time amplifier circuits utilizing either single-ended, or differential, inputs and either single-ended, or differential, outputs.
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