Open-loop slew-rate controlled output driver

Details Open-loop slew-rate controlled output driver Open-loop slew-rate controlled output driver

2006-07-06

2008-11-11

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Compensation for variations in external physical values

C327S262000, C327S170000

Reexamination Certificate

active

07449936

ABSTRACT:
A slew-rate controlled output driver for use in a semiconductor device includes a PVT variation detection unit having a delay line for receiving a reference clock in order to detect a delay amount variation of the delay line determined according to process, voltage and temperature (PVT) variation; a selection signal generation unit for generating a driving selection signal which corresponds to a detection signal generated by the PVT variation detection unit; and an output driving unit having a plurality of driver units controlled by an output data and the driving selection signal for driving an output terminal with a driving strength which corresponds to the PVT variation.

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