Amplifiers – With periodic switching input-output
Patent
1997-01-30
1998-09-22
Mottola, Steven
Amplifiers
With periodic switching input-output
330289, 330296, H03F 102
Patent
active
058120246
ABSTRACT:
The gain-bandwidth product for an integrated circuit is stabilized by operating a first capacitance element that tracks a load capacitance of an integrated circuit to be stabilized over a given range of ambient operating conditions, and operating a first control element having a control terminal and first and second controlled terminals in a triode operating region. The conductance of the first control element is set to correspond to an effective conductance of the first capacitance element by developing a feedback control voltage and coupling the control voltage to the control terminal of the first control element. The control voltage is also coupled to a control terminal of a second control element, and a controlled terminal current of the second control element is coupled to the integrated circuit to be stabilized while operating the second control element in a saturation region. The gain-bandwidth product of the integrated circuit is controlled with respect to ambient operating conditions by establishing a bias current in the integrated circuit that corresponds to the controlled terminal current of the second control element.
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Lucent Technologies - Inc.
Mottola Steven
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