Analog-to-digital converter
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United States of America Patent
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Jun 4, 2013
Grant Date -
Oct 13, 2011
app pub date -
Oct 9, 2009
filing date -
Oct 10, 2008
priority date (Note) -
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Abstract
An analog-to-digital converter including a voltage generation unit and a plurality of sub ADCs, each including a selection unit for selecting a voltage generated by the voltage generation unit based on a number and forwarding the selected voltage to a comparator arrangement. The selection unit includes first and second switch layers. The first switch layer includes a plurality of switch groups, each including a plurality of switch devices, each connected to a unique output terminal of the voltage generation unit with a first terminal and to a common node of the switch group with a second terminal. The second switch layer includes a switch device between the common node of each switch group and the first output terminal of the selection unit and a switch device between the common node and the second output terminal of the selection unit. A control unit generates control signals for the switch devices.
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