Low-noise current source
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United States of America Patent
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Feb 21, 2012
Grant Date -
Dec 1, 2011
app pub date -
Jun 1, 2010
filing date -
Jun 1, 2010
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A low noise current source includes first and second voltage input terminals. The current source further includes an amplifying device having an input terminal and an output terminal, where the output terminal is coupled to the second voltage input terminal via a load. The current source also includes a bias circuit coupled between the first voltage input terminal, the second voltage input terminal, and the input terminal. The current source additionally includes a first bypass circuit coupled between the first voltage input terminal and the input terminal, where the first bypass circuit configured to provide a substantially high electrical resistance and substantially no electrical impedance between the first voltage input terminal and the input terminal.
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