Single-ended output driver buffer

Details Single-ended output driver buffer Single-ended output driver buffer

2007-10-23

2008-08-12

Tran, Anh Q (Department: 2819)

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Output switching noise reduction

C326S026000, C326S030000

Reexamination Certificate

active

07411414

ABSTRACT:
Circuits and related methods are provided for buffering reference voltages from noise associated with output driver transistors. In one example, an output driver buffer circuit includes an output driver transistor adapted to adjust an output voltage of an output pad. The circuit also includes a pre-driver circuit connected to a gate of the output driver transistor. The pre-driver circuit is adapted to receive a reference voltage to control the output driver transistor. The pre-driver circuit includes a precharged capacitor, a first switch adapted to connect the capacitor to the gate, and a second switch adapted to connect the reference voltage to the gate. The second switch is adapted to operate following a time period after the capacitor is connected to the gate. The capacitor is adapted to buffer noise associated with the output driver transistor during the time period.

REFERENCES:
patent: 2003/0141894 (2003-07-01), Gonzalez

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