Apparatus and method for programmable power management in a programmable analog circuit block
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United States of America Patent
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Apr 3, 2012
Grant Date -
N/A
app pub date -
Aug 29, 2001
filing date -
Oct 26, 2000
priority date (Note) -
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Abstract
An apparatus and method for programmable power management in a programmable analog circuit block. Specifically, the present invention describes an operational amplifier circuit that includes current sources that are coupled in parallel. Configuration bits are asserted to selectively enable or selectively disable one or more of the current sources in order to modulate the performance of the operational amplifier circuit block. Selective addition or removal of current sources increases or decreases the amount of current within the operational amplifier and, correspondingly, the speed and power consumption of the operational amplifier. Combinations of asserted configuration bits pass a bias voltage in order enable selected current sources. In one embodiment, the bias voltage can be increased in order to increase the current output of one of the current sources which, correspondingly, increases the speed of the operational amplifier circuit block.
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