Staged predriver for high speed differential transmitter

Details Staged predriver for high speed differential transmitter Staged predriver for high speed differential transmitter

2010-04-07

2011-10-04

Ismail, Shawki (Department: 2819)

Electronic digital logic circuitry

Interface

Current driving

C326S062000, C326S082000, C326S083000, C326S084000, C326S086000, C327S108000

Reexamination Certificate

active

08030968

ABSTRACT:
According to various embodiments, a differential transmitter includes a driver and a predriver. In various embodiments, the predriver may include pull-up transistors and pull-down transistors configured in various ways to produce a staged output signal during a pull-up transition, wherein the higher bits of the input signal are switched slower in comparison with the lower bits of the input signal, while at the same time maintaining the simultaneous pull-down transition among all the bits. In various embodiments, the staged output of a predriver may further be dynamically disabled during a deemphasis exit transition. Other embodiments may be described and claimed.

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