Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Current driver
Reexamination Certificate
2006-01-12
2009-10-20
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Current driver
C326S083000
Reexamination Certificate
active
07605618
ABSTRACT:
A digital output driver includes a pre-driver and a driver that may be implemented with thin-oxide FETs. The pre-driver generates first and second digital signals based on a digital input signal. The first digital signal has a first voltage range determined by a first (e.g., pad) supply voltage and an intermediate voltage. The second digital signal has a second voltage range determined by a second (e.g., core) supply voltage and circuit ground. The driver receives the first and second digital signals and provides a digital output signal having a third voltage range determined by the first supply voltage and circuit ground. The pre-driver may include a latch and a latch driver. The latch stores the current logic value for the digital input signal. The latch driver writes the logic value to the latch. The latch driver is enabled for a short time duration to write the logic value and is turned off afterward.
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Mohan Vivek
Srinivas Vaishnav
Chen Alex C.
Donovan Lincoln
Hernandez William
Mobarhan Ramin
QUALCOMM Incorporated
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