Differential current multiplexer for current switched DACs
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United States of America Patent
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Aug 13, 2002
Grant Date -
Mar 7, 2002
app pub date -
Aug 7, 2001
filing date -
Aug 9, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A circuit and method is provided that allows for communication of digital to analog data over more that one channel employing a single current switching DAC and a current switching multiplexer. The current switching multiplexer is an output stage circuit that is used to steer the current from one output channel to another. The data rate of the data transmitted to the DAC is increased by the number of channels that the data is being transmitted over. The data is then switched from one channel to the other by employing a current switching multiplexer, such that the device provides for the same functionality that conventional devices utilizing a single DAC for multiple channels as opposed to a single DAC for a single channel.
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