Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
November 17, 2009
Patent Application Number
12042567
Date Filed
March 5, 2008
Patent Primary Examiner
Patent abstract
An operational amplifier includes a differential amplifier connected between an input and an output port of the operational amplifier, a phase compensator capacitance connected between the differential amplifier and the output port, a switching transistor for controlling the connection between the phase compensator capacitance and the differential amplifier, a detection transistor responsive to a potential difference between the input and output ports to be rendered conductive, and a control transistor responsive to the detection transistor for controlling the switching transistor. The operational amplifier has its slew rate improved without detracting from stability against oscillation and continuity of the output waveform.
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