Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Reexamination Certificate
2010-02-15
2011-11-01
Nguyen, Hai L (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
C327S563000
Reexamination Certificate
active
08049534
ABSTRACT:
In bipolar CMOS or BiCMOS process technologies, drivers (such as mixed mode or hybrid mode drivers) using both bipolar and CMOS transistors (i.e., field effect transistors or FETs) may have undesirable properties, such as reduced speed, ringing, latch-up, or lower electrostatic discharge (ESD) performance. Here, a mixed or hybrid mode driver is provided that employs a current steering circuit (instead of voltages driven differential pair(s) as is done with conventional drivers) to generate pull-down currents that precisely match the voltages in the pull-up portions of driver. It increases the speed and produces smaller output common-mode voltage fluctuation over conventional drivers. Thus, the driver provided here can be produced in BiCMOS process technologies without the undesirable effects of conventional drivers.
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“An Ultra Low Power 10 Gbps LVDS Output Driver,” Bipolar/BiCMOS Circuits and Technology Meeting, Oct. 13-15, 2008, pp. 5-8 (Khaldoon Abugharbieh, Jitendra Mohan, Devnath Varadarajan, Ivan Duzevik and Shoba Krishnan).
Fan Yanli
Hu Yaqi
Morgan Mark W.
Brady III Wade J.
Nguyen Hai L
Patti John J.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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