Center tap level control for current mode differential driver
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United States of America Patent
Stats
-
Aug 5, 2003
Grant Date -
N/A
app pub date -
Apr 18, 2002
filing date -
Apr 18, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A feedback mechanism is provided to a current mode differential driver by connecting the center tap of a terminator of the output of the driver through feedback resistors to the gates of a positive and a negative current source connected to the driver. Connecting the center tap between the feedback resistors, the average common mode voltage at the output of the differential driver is substantially constant which avoids variations and reflective noise in high speed data transmission that can occur because of manufacturing tolerances.
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