Output stage amplifier with compensation circuitry
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United States of America Patent
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Apr 22, 2003
Issued Date -
N/A
app pub date -
Jul 31, 2002
filing date -
Dec 18, 1998
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Abstract
An output stage amplifier circuit in accordance with the present invention overcomes many shortcomings of the prior art. A output stage amplifier circuit for providing a high output voltage and current reference signal suitably includes an output buffer configured with a compensation circuit for reducing disturbances introduced into the output stage amplifier circuit by voltage supply rails, such as parasitic ringing and other disturbances. The compensation circuit can suitably comprise a first compensation device, such as at least one capacitor, and a second compensation device, such as at least one capacitor. The compensation devices are suitably coupled between an input terminal of the output stage amplifier circuit and a pair of transistors proximate a pair of output transistors of the output stage amplifier circuit, and are configured to provide 'pole-zero' compensation to the output stage amplifier circuit.
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