Digital to-analog conversion circuit
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United States of America Patent
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Sep 16, 2014
Issued Date -
N/A
app pub date -
Sep 12, 2013
filing date -
Oct 12, 2012
priority date (Note) -
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Abstract
A D/A conversion circuit includes: current generation circuits each including a constant current source configured to generate a current, a first MOSFET connected to the constant current source and configured to control a supply destination of the current, a first gate control section configured to exclusively supply a first voltage and a second voltage to a gate of the first MOSFET, and a first discharge switch connected to the first gate control section and the gate of the first MOSFET, controlled to be turned on at the same time as the first gate control section supplies the second voltage and controlled to be turned off before the first gate control section supplies the first voltage; a first current addition line; a discharge line; a first resistor connected to the first current addition line; and a voltage source configured to supply the second voltage to the first gate control sections.
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