Analog-to-digital converter with switched integrator
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United States of America Patent
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Dec 28, 2004
Grant Date -
N/A
app pub date -
Nov 20, 2002
filing date -
Nov 20, 2002
priority date (Note) -
Expired
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Abstract
Methods and apparatus for converting analog signals to digital signals using a switched integrator. A method includes receiving the analog signal at a summing junction, receiving a clock signal transitioning between a first level and a second level, connecting an output of the summing junction to an integrator when the clock signal is at the first level, and disconnecting the output of the summing junction from the integrator when the clock signal is at the second level. An output signal is provided, and is determined by the polarity of an output of the integrator when the clock signal transitions from the first level to the second level. The output signal is delayed, and received with a digital-to-analog converter; which provides an output to the summing junction.
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