Circuit for automatically controlling the gain-bandwidth product of operational amplifiers
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United States of America Patent
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May 30, 1989
Grant Date -
N/A
app pub date -
Apr 7, 1988
filing date -
Apr 17, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A circuit for automatically controlling the gain-bandwidth product of operation amplifiers, where gain-bandwidth product (G*B) of one of the amplifiers placed on the same chip as the amplifiers to be controlled is measured and the resulting signal is used to control through a bias circuit the gain-bandwidth products of all the amplifiers, the value of these products being presettable through the frequency of a control signal sent to the circuit input. The reference amplifier is highly compensated for and placed in the configuration of voltage follower.
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