Analog amplifier for recovering abnormal operation of common mode feedback
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United States of America Patent
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Jan 9, 2018
Issued Date -
N/A
app pub date -
Sep 3, 2013
filing date -
Sep 3, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
An analog amplifier for recovering an abnormal operation of a common-mode feedback is provided. An analog variable amplifier includes a first input transistor and a second input transistor, a first output transistor and a second output transistor, a third transistor and a fourth transistor, a first current source, a fifth transistor and a sixth transistor, and a second current source. The first input transistor and the second input transistor amplify a bias current depending on a magnitude of a first input voltage and a second input voltage. The first output transistor and the second output transistor output the amplified bias current. The third transistor and the fourth transistor receive an output voltage of the first output transistor as an input and amplifying the received output voltage. The first current source provides a predetermined current between the first output transistor and the third transistor.
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